发布时间 : 星期三 文章100mw晶体硅太阳能并网光伏发电站建设项目可研计划书更新完毕开始阅读
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries. For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every morning, Murray got out of bed at five o’clock and worked several hours efore breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once sh China Sea. e has madePART2 A up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of world geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you ever seen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look at us.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a lage tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before. 资源种类 煤炭（亿吨） 探明可开采量 可开采年限 可开采到 石油 （亿吨） 32,736 10－15 天然气 （亿立方米） 11,704 23－53 水力 (GW装机) 353 33－99 2034－2100年 1,145 49－76 2050－2077年 2011－20162024－2054年 年 综合上述预测，本世纪人类能源结构将发生根本性变革。化工石油燃料开采峰值距今只有十几到二十几年，对于能源结构变化来说是已经逼近。因此开发可再生能源和新能源不但是非常必要的，而且是非常紧迫的。随着技术的不断革新和国家政策的扶持，光伏发电系统将在未来社会能源供应中占有越来越大的比重。
（3）项目建设是环境保护的需求
传统能源对环境造成的严重污染是不容忽视的，在节约能源和保护环境的前提下发展经济已成为人们的共识，即“3E”课题—能源（energy）、经济（economy）、环境（envirnorment）。1997年12月由联合国150多个国家代表签署的关于气候变化的框架协定，要求世界各国改变能源利用方式，从煤和石油逐渐转化为可再生能源，从而彻底改变人类发展与能源危机和环境污染之间的矛盾。对使用煤炭占能源70%的我国来说，化工、石油燃料的供应和大气污染的压力越来越重，见表3。不久的将来，若实施
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every moning, Murray got out of bed at five o’clock and worked several hours before breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\ who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once she has made up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of worer ld geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South China Sea. PART2 A NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you evseen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look atus.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a large tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before.
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries. For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every morning, Murray got out of bed at five o’clock and worked several hours efore breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once sh China Sea. e has madePART2 A up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of world geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you ever seen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look at us.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a lage tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before. 全球限制排放政策，将对我国的能源利用产生较大影响。
表3 2008年我国能源污染物年排放浓度 项目 SO2排放浓度 南方城市全国均值 均值 33北方城市均值 3WHO推荐 标准 40-60μ3g/m 40-60μ3g/m 70μg/m 65μg/m 81μg/m TSP排放浓333301μg/m 3μg/m 381μg/m 度 我国在21世纪石油战略框架基础上，颁布了《可再生能源法》，形成了能源、环境和可持续发展三大基本发展战略，并在“十一五”规划中以循环经济和节约型社会的发展模式予以具体体现。从表4可以看出，太阳能作为清洁能源，将在能源供应中占据越来越重要的地位。
2.3 项目建设的可行性
2.3.1太阳能发电站的独特特点和优势
用于太阳能电池将太阳能直接转换为电能的“太阳光发电装置”，其本身的优点是输入的太阳光线储量无限，并且“免费”，除此之外，作为未来的能源资源，具有其他发电装置不可比拟的独特特征，总结起来有如下几点：
（1）没有运转部件，可以安静的产生清洁能源。从光能转换成电能是由半导体特有的量子效应而产生的转换法，不像火力发电和原子能发电，需要涡轮和发电机这样的转动部分，且没有
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every moning, Murray got out of bed at five o’clock and worked several hours before breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\ who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once she has made up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of worer ld geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South China Sea. PART2 A NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you evseen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look atus.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a large tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before.
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries. For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every morning, Murray got out of bed at five o’clock and worked several hours efore breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once sh China Sea. e has madePART2 A up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of world geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you ever seen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look at us.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a lage tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before. 噪声以及放射源泄漏或爆炸的危险，当然也没有有害气体的产生，是无公害的清洁能源转换方法。
（2）维护简单，容易实现自动化和无人化。因为没有转动机械和高温高压部分，因此就没有所谓的机械磨损，也不需要润滑油。也就是说，就像已经被证实的人造卫星和无人电灯等所使用的电源一样，运转维护简单，容易实现装置自动化和无人化。
（3）光发电是对废弃能源的有效利用。有人会因太阳光发电的转换效率很低而否定它，其实不能把太阳光发电与使用化石燃料发电的蒸气涡轮、气体涡轮等与转换效率有关的议论混在一起，即如果火力发电的综合效率为38％的话，那么就意味着有62％的重油被白白的烧掉，并且造成了大气的污染。与此相比，太阳能电池的转换效率虽为15%,但它却没有消耗任何燃料，只是把本来放弃的能量的15％转变成电能而有效的利用起来了，从这一点来讲是有很大的区别的。
（4）对城市供电高峰的平峰供献。发电设备建设周期很长，运行以后无法在短时间内增加尖峰时所需电力。而且，城市供电十分不均衡，例如，白天比晚上的用电量大，一般中午13－15时为峰值；夏季由于用空调用电量要比冬季用电量增大很多。其应对的办法，如核电就用抽水蓄能水力发是以削平电力峰值。太阳能发电就可以在城市近几年力高峰时，与交流电网并网，并补足峰值负荷的不足，起到“平峰”作用。而且太阳能发电的电力
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every moning, Murray got out of bed at five o’clock and worked several hours before breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\ who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once she has made up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of worer ld geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South China Sea. PART2 A NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you evseen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look atus.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a large tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before.
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries. For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every morning, Murray got out of bed at five o’clock and worked several hours efore breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\my sister who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once sh China Sea. e has madePART2 A up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of world geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you ever seen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look at us.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a lage tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before. 负荷曲线赐好与城市电力的需求相吻合。例如，太阳能发电输出最大功率正好是中午12－15时，太阳能发电也是夏季比冬季高。目前，国外“太阳 能空调器”产品已经实用化，太阳能发电提供了容量约空调的50％，主要起“平峰”作用。
（5）电源多样化，可以安全可靠的供电。常规能源有火力、水力、核电等新能源则有风力、太阳能等。多种能源发、供电，对一个国家的安全、可靠供电有利，将不会依赖特点的燃料供给。特别是自然灾害之际，学校、医院、公园都需事先设置紧急的太阳能发电设备用电源。
2.3.2 项目区基本情况 (1)地理交通
XX位于湖南省中南部，湘江中游。东邻株洲、攸县、安仁；南界永兴、桂阳；西接冷水滩、祁阳、东安、邵阳、邵东；北靠双峰、湘潭。XX市现辖5县、2市、5区，总面积1.53万平方公里，合153.10万公顷，总面积占全省土地面积7.23%，城区面积557平方公里，市区建成区面积为93平方公里，总人口720万，在全省各市、州中，幅员位居第7位。
XX市是我国南方的重要交通枢纽，京广、湘桂线交汇于市区，境内通车里程250公里，有火车站33个。公路纵横交错，四通八达，107、322国道以及已建成的京珠、衡昆，已开工建设的京珠复线、吉邵（衡大段已建成）等4条高速公路贯穿全境。
live in the mountains of the eastern USA speak with an older kind of English dialect. When Americans moved from one place to another, they took their dialects with them. So people from the mountains in the southeastern USA speak with almost the same dialects as people in the northwestern USA. The USA is a large country in which many different dialects are spoken. Although many Americans move a lot, they still recognize and understand each other’s dialects. THE OXFORD ENGLISH DICTIONARY You may think that English dictionaries have been used for many, many centuries. The spelling of English has always been a problem but it was more of a problem in the days before a dictionary. Then people could spell word in different ways which you might find it interesting. But it made reading English much more difficult. So dictionaries were invented to encourage everybody tospell the same. In fact, an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. There men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to collect words for their dictionaries For them, it wasn’t only a job; it was a wonderful journey of discovery. The largest dictionary in the world is the Oxford English Dictionary, or OED for short. The idea for this dictionary came from an important meeting in Britain in 1857. Twenty-two years later, Oxford University asked James Murray to be the editor of its new dictionary.Murray had never been to college. At the age of fourteen, he left his village school in Scotland and taught himself while working in a bank. Later he became a great teacher. After Oxford gave him the job, Murray hada place built in the garden behind his house to do his work. Part of it was one meter underground. In winter it felt like a barn, he had to wear a heavy coat and put his feet in a box to keep warm. Every moning, Murray got out of bed at five o’clock and worked several hours before breakfast. Often he would work by the candle light into the evening. Murray hoped to finish the new dictionary in ten years. But after five years, he was still adding words for the letter A! then others went to work with Murray, including his two daughters. He worked on the dictionary until he was very old. Forty-four years later, in1928, other editors finished it. It included more than 15,000 pages in twelve books. And you thought your dictionary was big! Unit 3 JOURNEY DOWN THE MEKONGPART 1 THE DREAM AND THE PLAN My name is Wang Kun. Ever since middle school, my sister Wang Wei and Ihave dreamed about taking a great bike trip. Two years ago she bought an expensive mountain bike and then she persuaded me to buy one. Last year, she visited our cousins, Dao Wei and Yu Hang at their college in Kunming. They are Dai and grew up in western Yunnan Province near the Lancang River, the Chinese part of the river that is called the Mekong River in other countries. Wang Wei soon got them interested in cycling too. After graduating from college.we finally got the chance to take a bike trip. I asked my sister, \e we going?\ who first had the idea to cycle along the entire Mekong River from where it begins to where it ends. Now she is planning our schedule for the trip.I am fond of my sister but she has one serious shortcoming. She can be really stubborn. Although she didn't know the best way of getting to places, she insisted that she organize the trip properly. Now, I know that the proper way is always her way. I kept asking her, \e we coming back?\er whether she had looked at a map yet. Of course, she hadn't; my sister doesn't care about details. So I told her that the source of the Mekong is in Qinghai Province. She gave me a determined look—the kind that said she would not change her mind. When I told her that our journey would begin at an altitude of more than 5,000 metres, she seemed to be ex about it. When I told her the air would be hard to breathe and it would be very cold, she said it would be an interesting experience. I know my sister well. Once she has made up her mind, nothing can change it. Finally, I had to give in. was autumn,thSeveral months before our I went to the library. We found a large atlas with good maps that showed details of worer ld geography. From the atlas we could see that the Mekong River begins in a glacier on a Tibetan mountain. At first the river is small and the water is clear and cold. Then it begins to move quickly. It becomes rapids as it passes through deep valleys, travelling across western Yunnan Province. Sometimes the river becomes a waterfall and enters wide valleys. We were both surprised to learn that half of the river is in China. After it leaves China and the high altitude,the Mekong becomes wide，brown and warm. Ascited it enters Southeast Asia, its pace slows. It makes wide bends or meanders through low valleys to the plains where rice grows. At last, the river delta enters the South China Sea. PART2 A NIGHT IN THE MOUNTAINS Although ite snow was alr trip,Wang Wei andeady beginning to fall in Tibet.Our legs were so heavy and cold that they felt like blocks of ice.Have you evseen snowmen ride bicycles?That’s what we looked like! Along the way children dressed in long wool coats stopped to look atus.In the late afternoon we found it was so cold that our water bottles froze..However,the lakes shonelike glass in the setting sun and looked wonderful.Wangwei rode in front of me as usual.She is very reliable and I knew I didn’t need to encourage her. To climb the mountains was hard work but as we looked around us, we were surprised by the view. We seemed to be able to see for miles. At one point we were so high that we found ourselves cycling through clouds. Then we began going down the hills. It was great fun especially as it gradually became much warmer. In the valleys colourful butterflies flew around us and we saw many yaks and sheep eating green grass. At this point we had to change our caps, coats,gloves and trousers for T-shirts and shorts. In the early evening we always stop to make camp.We put up our tent and then we eat. After supper Wang Wei put her head down on her pillow and went to sleep but I stayed awake. At midnight the sky became clearer and the stars grew brighter. It was so quiet. There was almost no wind—only the flames of our fire for company. As I lay beneath the stars I thought about how far we had already travelled. We will reach Dali in Yunnan Province soon, where our cousins Dao Wei and Yu Hang will join us. We can hardly wait to see them!PART THE END OF OUR JOUNEY ambodia was in many ways similar to Laos, although it has twice the population. At another inn, we talked with a teacher who told us that half of the people in her country couldn’t read or write. Her village couldn’t even afford to build a school, so she had to teach outside under a large tent. When we said goodbye, we all felt very lucky to have studied in college.Back on the road, we passed between many hills and forests. Then we came to the plains and entered Phnom Penh,the capital of Cambodia. In many ways it looked like Vientiane and Ho Chi Minh City; it also had wide streets with trees in rows and old French houses.Unlike Vientiane, ships could travel the Mekong River here.In the center of the city we visited the palace and a beautiful white elephant. It can only be seen outside the palace on special days. We ate an early supper and went to see a great temple with floors made of sliver. The next morning our group slept late. We were very tired from the long bike ride the day before.