发布时间 : 星期日 文章四川省宜宾市一中2018_2019学年高三英语上学期第12周周练题更新完毕开始阅读
四川省宜宾市一中2019-2019学年高三英语上学期第12周周练题
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As smart devices continue to fill people’s daily life, the debate over their place in the classroom has grown increasingly. Now, a study conducted at the United States Military Academy just might put an end to it.
In a recent investigation, researchers found that students who were permitted to use laptops or tablets in the classroom performed worse than those who did not—and those with higher initial GPAs(平均成绩) were most heavily affected.
While some argue that laptops aid students in note-taking and comprehension, many say that they couldn’t pay attention to the lessons. To get to the bottom of the issue, researchers investigated the effect of laptops and tablets on student performance in a course at a school.
In the study, the class was then divided into two treatment groups. The first treatment group was permitted to use laptops and tablets for purposes relating to their lesson. If the students were obviously distracted, professors could stop them from using the devices. In the second group, students could only use tablets, making the screen easily visible to the professors. When it came time for final exam scores, the researchers found that using a laptop or tablet in the classroom had caused a drop of roughly one-fifth of a standard. The results for the two treatment groups were nearly the same, they say.
And, the negative effects were seen most heavily in male students. The estimated effects of the two treatment groups are nearly the same, suggesting that even allowing students to use computer devices in a manner that is controlled by the professor can have harmful effects on classroom performance.
The researchers say that both unrestricted and restricted use may affect students in a number of ways. It could lead to distractions, in which students are checking social media or even doing homework for another class, and it may reduce students’ abilities to effectively take notes.
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1.The underlined word “it” in the first paragraph may refer to ______. A.the device B.the debate C.the classroom D.the study
2.Who suffered from the use of smart devices most in the study?
A.The male students with higher GPAs. B.The students with poor academic performance. C.The students who could use laptops or tablets freely.
D.The male students who could use laptops or tablets under control. 3.What conclusion did the study draw?
A.The professors had no effect on students’ scores. B.The first treatment group had a rise of the scores.
C.The second treatment group did better than the first.
D.The two treatment groups both saw a drop in the scores. 4.What can be inferred from the text?
A.Using laptops could help students perform better in a course. B.The negative effects of computer devices depended on gender. C.The distraction caused the drop of the students’ scores. D.Restricted use of laptops aided students in taking notes.
B
A machine that takes sweat-laden (浸满汗水的) clothes and turns the sweat into drinking water is in use in Sweden. The machine makes the clothes turn round quickly, heats them to remove the sweat, and then passes the steam through a kind of special material to make purified water
The device was built for the United Nations’ child-focused charity UNICEF to promote a campaign highlighting the fact that 780 million people in the world lack access to clean water.
The machine was designed and built by the engineer Andreas Hammar, known locally for his appearances on TV tech show “Mekatronik”. He said the key part of the sweat machine was a new water purification part developed by a company named HVR.
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“It uses a technique called membrane distillation (膜蒸馏),” he told the BBC. “We use a special kind of material that only lets steam through but keeps bacteria, salts, clothing fibers and other things out. They have something similar to the International Space Station, but our machine is cheaper to build. The amount of water it produces depends on how sweaty the person is, but one person’s T-shirt typically produces 10ml, about a mouthful.”
The device has been put on show at the Gothia Cup-the world’s largest international youth football tournament. Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo, said the machine had helped raise awareness for UNICEF, but in reality had its limitations.
“People haven’t produced as much sweat as we hoped – right now the weather in Gothenburg is lousy,” Mattias Ronge said. “So we’ve equipped the machine with exercise bikes and volunteers are cycling like crazy. Even so, the demand for sweat is greater than the supply. And the machine will never be produced in large numbers, since there are better solutions out there such as water purifying pills.”
1. Which of the following is the disadvantage of the sweat machine?
A. It takes too long for the machine to produce water.
B. It costs a large amount of money to build the machine.
C. The amount of water the machine produces is rather limited.D. The water processed by the machine is not clean enough.2. UNICEF is mentioned in the text to ________.
A. show how the sweat machine works B. tell us who invented the sweat machine
C. show the importance of the United Nations D. explain why the sweat machine was invented
3. What did Mattias Ronge think of the sweat machine?
A. It did not work at all. B. It was not worth popularizing.
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C. It could only be used in summer. D. The water it produced tasted sweet.
4.The text is written mainly to tell us that ______________.A. a better solution to purifying dirty water is discovered
B. 780 million people in the world lack access to clean water
C. a machine which turns sweat into drinking water is invented
D. the pill which turns dirty water into clean water is produced七选五
Growing Minds Need Greener Spaces
It is not a secret that spending time outdoors is good for us.The more we learn about the benefits of being in nature, the more sense it makes to get outside.
____9____.New research suggests that kids may learn better when they are surrounded by greener spaces.Green spaces are spaces filled with Vegetation-like trees,flowers and other plants.
But these days,outdoor time is competing for a child’s attention with indoor
activities.Children may find it difficult to resist computers,television and electronic games.____10___.All these indoor activities can hurt a child’s physical and mental health.
Doctor Payam Dadvand and his team at the Centre for Research in Environmental Epidemiology in Barcelona study the environment effects on health and learning.
The researchers used information from satellites to learn how much green space surrounded each school.Over one year, the children took computerized tests for four
times._____11_____.They found that the children with higher contact with green space had better ability to memorize.They were also more attentive.____12____.More trees means less air pollution.
_____13____.Lisa Freund is an expert in child psychology for the National Institute of Child Health and Human Development.She says more studies are needed to learn the Health and Human Development.She says more studies are needed to learn the reasons that vegetation in and around schools improves mental ability.
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