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1、四川省宜宾市一中2023学年高三英语上学期第12周周练题AAs smart devices continue to fill peoples 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 toit. In a recent investigation, researchers found that students
2、who were permitted to use laptops or tablets in the classroom performed worse than those who did notand 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 couldnt pay attention to the lesson
3、s. 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 relatin
4、g 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 lapto
5、p 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, sugges
6、ting 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 s
7、tudents are checking social media or even doing homework for another class, and it may reduce students abilities to effectively take notes. 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 dev
8、ices 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 effec
9、t 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 ne
10、gative 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. BA 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 make
11、s 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 waterThe device was built for the United Nations child-focused charity UNICEF to promote a campaign highlighting the fact that 780 million people in the wor
12、ld 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.“It uses a technique called me
13、mbrane 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 pr
14、oduces depends on how sweaty the person is, but one persons T-shirt typically produces 10ml, about a mouthful.”The device has been put on show at the Gothia Cup-the worlds largest international youth football tournament. Mattias Ronge, chief executive of Stockholm-based advertising agency Deportivo,
15、 said the machine had helped raise awareness for UNICEF, but in reality had its limitations.“People havent produced as much sweat as we hoped right now the weather in Gothenburg is lousy,” Mattias Ronge said. “So weve equipped the machine with exercise bikes and volunteers are cycling like crazy. Ev
16、en 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
