发布时间 : 星期五 文章大学英语一（董亚芬） Unit1 习题加答案更新完毕开始阅读
Unit 1
1、单词
strategy 策略 means方法 diligence 勤勉 prolonged 长时间的 nevertheless 然而 command 掌控 sustained 持久的 helpful 有帮助的 complain 抱怨 memorize 记住 cram 把?塞满 bound 一定的 constant 经常的 commit 把?托付给 acquaintance了解 concentrate 专心 effective 有效的 route 路径 enlarger 扩大 vocabulary 词汇 usage 惯用法 idiomatic 合乎语言习惯的 idiom basis 基本的 addition 增加 movie 电影 repetition 重复 opportunity 机会 communicate 沟通 enjoyable 享受 campus 校园 rehearse 排练 partner 搭档 instance 事例 detail 详情 purchase 购买 reliable 可靠的 source 来源 input 输入 rely(on) 依赖 handle 处理 apart 分开 assign 分配任务给… pal 朋友 motivation 动力 culture 文化 summarize 总结 process 过程 accumulation 积累 absorb 吸收 environment 环境 2、短语
by no means决不 at fault 有错过 at a time 一次 be bound to 肯定会 commit to memory 记住 watch out for 密切注意 learn of/about得知 on a regular/daily/weekly basis 经常/每天/每周 in addition to 除?之外(还有) over and over again 反复 seek out 找出 feel free 随意 for instance 例如 in detail 详细地 act out 将?表演出来 apart from 除?之外(还有) put … into practice 把?实践 3、单词词汇练习 absorb acquaintance assign command communicate complain concentrate(on) constant diligence enlarge environment frequent(ly) handle nevertheless opportunity process purchase reliable rely(on) source strategy summarize apart from at a time be bound to by no means commit … to memory feel free for instance in addition to in detail on a … basis over and over again put … into practice seek out watch out for 4、单词填空（会改成选择题）
1)Young as she is, Marry is very good at __________difficult customers.
2) After explaining his plan in great detail, Bob __________ its main points in a few sentences. 3) The newly-elected government has begun the painful _________ of working out its policies and strategies.
4) At first, Tom found it difficult to __________ what his teachers said in class. 5) You __________ fail the exam if you don’t do any revision. 6) please __________ to call on us whenever you like.
7) There are jobs more dangerous than trunk driving, __________, training lions.
8) The marketing department is working on new __________ to improve the company’s share of the market.
9) Many of the students __________ that the exam was too hard.
10) After reading the text three times, the clever boy __________ it __________ .
11) The doctor insisted that everything would be alright. __________ ,I cannot help felling anxious about the safety of the child.
12) Nowadays we __________ more and more _________ computers to help us in doing everything.
13) __________ being fun and good exercise, swimming is a very useful skill.
14) After spending a year in Australia, the little girl has gained quite a good __________ of spoken English.
5、完形填空
Learning s_________(1) help make the difficult task of studying English easier. For instance, it is beneficial to treat new words in different ways according to how f_________(2) they occur in everyday use: active words you must practice o_________ a_________ o_________ a_________(3); useful words you must c_________ t_________ m_________(4); words that seldom occur In everyday situations require just a nodding a_________(5). It also pays to w_________ o_________ f_________(6) idiomatic ways of saying things in English. As idiomatic usage often causes difficulties for Chinese students, you must pay close attention to the way native speakers c_________(7).
Language learning is, in fact, an active p_________(8). Students who make a conscious effort to practice English, who seek out o_________(9) to use what they have learned, are more successful than those who r_________ o_________(10) the teacher to do the whole job. Undoubtedly, it is all important to p_________ i_________ p_________(11) through speaking and writing what you have a a_________(12) from reading and listening.
6、翻译
1、史密斯太太对我抱怨说，她经常发现与自己十六岁的女儿简直无法沟通。
2、我坚信，阅读简写的英文小说是扩大我们词汇量的一种轻松愉快的方法。
3、我认为我们在保护环境不受污染方面还做得不够。
4、除了每周写作文外，我们的英语老师还给我们布置了八本书在暑假里阅读。
5、我们从可靠的消息来源获悉下一学期一位以英语为母语的人将要教我们英语口语。
6、经常看英语电影不仅会提高你的听力，而且还会帮助你培养说的技能。
7、如果你们对这些学习策略有什么问题，请随便问我。我将更详细地进行讲解。
8、那个加拿大女孩善于抓住每个机会讲汉语。这就是她为什么三年不到就熟练掌握了汉语的原因。
7、快速阅读
The Earth's Atmosphere
Unless it's raining or the wind is blowing, we don't usually pay much attention to the atmosphere,
the blanket of air that surrounds the Earth. Yet, without the atmosphere, the Earth would be a desolate (荒芜的) planet with no signs of life!
The atmosphere plays several roles in helping to make life possible. First, the atmosphere provides the three gases necessary for life: oxygen, nitrogen, and carbon dioxide. All animals, including ourselves, breathe oxygen. Nitrogen and carbon dioxide are both needed for plant growth. Less important atmospheric gases include argon, neon, helium, and hydrogen.
Second, the atmosphere also protects us from most of the sun's high-energy ultraviolet light rays, which are harmful to life. Although these rays are only a small part of the sunlight striking the Earth, they are known to be very dangerous. However, 99 percent of all ultraviolet rays are absorbed before they reach the Earth's surface. They are absorbed by an atmospheric gas, called ozone, a type of oxygen gas. The ozone layer surrounds the Earth but is much thinner over the North and South Poles than over other regions of the Earth.
The one percent of the ultraviolet light in the atmosphere that does reach the Earth's surface is known to cause sunburn and is now believed to also cause skin cancer in many people. Because of this, doctors recommend that people limit the amount of time they spend in direct sunlight and wear a suntan lotion ( 防晒油) that blocks the ultraviolet rays when they do sunbathe.
Finally, the atmosphere generates all types of weather such as clear blue skies and storms. It acts as a huge energy machine, changing sunlight into other forms of energy such as heat and wind. As part of this role, the atmosphere regulates the temperature on the Earth's surface. First it allows only 46 percent of the sunlight striking it to pass through and actually reach the Earth's surface. Second, carbon dioxide gas in the atmosphere controls the amount of warmth on the Earth's surface that is allowed to radiate ( 发散 ) back into space. By these two controlling devices, the atmosphere regulates the Earth's surface temperature.
1、Choose the best answers to the following questions. Which of the following is true according tothe passage?
A. The ozone layer is much thicker over North America that over the North Pole. B. Ozone is a type of a nitrogen gas.
C. Ozone can absorb some ultraviolet rays before they reach the Earth's surface. D. Ozone can protect us from anything harmful to our life. 2、 The main idea of the third paragraph isthat. A. the Earth is surrounded by a layer of ozone
B. 99 percent of all ultraviolet light rays that reach the Earth's surface are absorbed by the ozone layer
C. the ozone layer protects people from the sun’s high-energy ultraviolet light rays. D. ozone is an atmospheric gas which surrounds the Earth
3、According to the article, carbon dioxide __________ A. is a less important atmospheric gas
B. controls the amount of warmth on the Earth’s surface.
C. allows only 46 percent of sunlight to reach the Earth's surface D. acts like a huge energy machine
4、Doctors suggest that_____________.
A. people should stay away from the sunlight to protect themselves from the sunburn B. people should block the ultraviolet rays when they do sunbathe C. people should wear a suntan lotion under direct sunlight.
D. people should know that skin cancer results from sunbathing 4.
5、 The Earth would be a desolate planet without the atmosphere because
A. the atmosphere is mainly composed of oxygen, hydrogen and nitrogen, which are indispensable to our life
B. the atmosphere plays several roles in making life possible C. the atmosphere allows only harmless rays to reach the Earth
D. the atmosphere controls the amount of warmth on the Earth's surface
Is El Nino Back?
There are signs that El Nino, the massive warming of the Pacific Ocean that affects the world's weather, may be forming again.
A satellite orbiting 600 miles above the Pacific Ocean picked up a streak of warm water forming along the equator — an early sign of the phenomenon felt around the world when it last appeared, just four years ago.
It is more than 3,000 miles long. The water in it is nine degrees warmer than in surrounding areas — a substantial number to oceanographers. The warm pool is growing and has caused government forecasters to put out an advisory ( 气象报告) .
\Kousky of the National Oceanic and Atmospheric Administration's Climate Prediction Center.
If a full-blown El Nino does form, Americans would most likely start to feel its effects next fall and winter.
The government called the forecast very preliminary — but the warning allows emergency agencies to make plans.
\now, we can't predict whether it will be weak, moderate or strong in intensity/' said Kousky.
Some scientists say it's too early to predict anything at all. \be very careful,\said one who asked not to be named. \反常状态) in the Pacific right now, and we need to watch it. But these things are very difficult to forecast.\
El Ninos can be both good and bad, depending on where you are. Even a relatively small one can bring about significant changes by shifting the wind patterns from the Pacific Ocean that pass over the United States.
During the last El Nino, in 1997 and 1998, rainfall doubled in California, causing a$1 billion in storm damage. On the other hand, in Florida, forest fires were put out by the extra rain. Choose the best answers to the following questions. 1、What can be regarded as an early sign of El Nino? A. A 3,000-mile long water streak.
B. A water streak that is warmer than surrounding areas. C. A streak of water forming along the equator. D. A huge warm water streak along the equator.
2、\. A. the Pacific Ocean
B. the 3,000-mile long warm water streak