2021届高考英语二轮阅读理解专项练习(十八)
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1、2021 高考英语二轮高考英语二轮阅读理解专项练习阅读理解专项练习(十八十八) (A) The connection between people and plants has long been the subject of scientific research. Recent studies have found positive effects. A study conducted in Youngstown, Ohio, for example, discovered that greener areas of the city experienced less crime. In
2、another,employees were shown to be 15% more productive when their workplaces were decorated with houseplants. The engineers at the Massachusetts Institute of Technology(MIT)have taken it a step further changing the actual composition of plants in order to get them to perform diverse,even unusual fun
3、ctions. These include plants that have sensors printed onto their leaves to show when theyre short of water and a plant that can detect harmful chemicals in groundwater. Were thinking about how we can engineer plants to replace functions of the things that we use every day,explained Michael Strano,
4、a professor of chemical engineering at MIT. One of his latest projects has been to make plants glow(发光)in experiments using some common vegetables. Stranos team found that they could create a faint light for three-and-a-half hours. The light,about one-thousandth of the amount needed to read by,is ju
5、st a start. The technology, Strano said, could one day be used to light the rooms or even to turn trees into self-powered street lamps. In the future,the team hopes to develop a version of the technology that can be sprayed onto plant leaves in a one-off treatment that would last the plants lifetime
6、. The engineers are also trying to develop an on and offswitchwhere the glow would fade when exposed to daylight. Lighting accounts for about 7% of the total electricity consumed in the US. Since lighting is often far removed from the power source(电源)-such as the distance from a power plant to stree
7、t lamps on a remote highway-a lot of energy is lost during transmission(传输).Glowing plants could reduce this distance and therefore help save energy. 1 .What is the first paragraph mainly about? A.A new study of different plants. B.A big fall in crime rates. C.Employees from various workplaces. D.Be
8、nefits from green plants. 2 .What is the function of the sensors printed on plant leaves by MIT engineer? A.To detect plants lack of water B.To change compositions of plants C.To make the life of plants longer. D.To test chemicals in plants. 3 .What can we expect of the glowing plants in the future?
9、 A.They will speed up energy production. B.They may transmit electricity to the home. C.They might help reduce energy consumption. D.They could take the place of power plants. 4 .Which of the following can be the best title for the text? A.Can we grow more glowing plants? B.How do we live with glowi
10、ng plants? C.Could glowing plants replace lamps? D.How are glowing plants made pollution-free? (B) You try to keep your eyes wide open while watching a basketball match or a wonderful firework show in case you might miss something exciting in just the blink of an eye.But in fact,humans blink about 1
11、5 times per minute on average.Have you ever missed anything because you blinked? Probably not.Why is that? According to a new study published in the journal Current Biology in September,our brain has the ability to skip the temporary darkness when we blink.It can keep visual information for a short
12、period of time and then put it together to form an image without interruption. In order to understand how this works,a group of scientists at the German Primate Center and the University Medical Center Gttingen in Germany conducted an experiment.In the study,the participants were asked to look at pa
13、tterns on a screen whose direction could be interpreted in different ways,such as horizontally(水平地) or vertically(垂直地).When one pattern was about to disappear and the next one was about to come,the participants had to indicate the direction that the next pattern would appear. The researchers found t
14、hat when the directions of two patterns didnt match,the area in our brain which is responsible for visual memory was activated.This same area showed less activity when two patterns were in the same direction. “The medial prefrontal cortex(额叶皮层) adjusts current visual information with previously obta
15、ined information,and thus enables us to perceive the world with more stability,even when we briefly close our eyes to blink,”Caspar Schwiedrzik explained in Science Daily.He is the first author of the study and also a scientist at the German Primate Center. 1.We dont miss anything when blinking beca
16、use our brain can . A.deal with the missing image B.remember all that we see C.imagine what our eyes miss D.put our pieces of memory together 2.What does the underlined word “it” in Paragraph 2 refer to? A.Our brain. B.Visual information. C.Current Biology. D.The temporary darkness. 3.What do we kno
17、w about the experiment? A.The two patterns appear at the same time. B.Visual memory can be more activated by similarity. C.Participants can interpret patterns differently. D.The different directions activated visual memory. 4.What would be the best title for this passage? A.The Brains Structure B.Th
18、e Brains Activated Patterns C.The Brains Special Skill D.The Brains Orientation (C) Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem. Race walkers are conditioned athletes. The longest tra
19、ck and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sports rules require that a race walkers knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. Its this s
20、trange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass. Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a p
21、ace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour. However, race walking does not pound the body as much as running does,
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