湖北武汉市2016高考英语阅读理解二轮基础训练(51)及答案.doc
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1、湖北武汉市2016高考英语阅读理解二轮基础训练(51)及答案【科普知识型-阅读理解】Doctors sometimes prescribe light therapy to treat a form of depression in people who get too little morning sun. But too much light at other time may actually cause such mood disorders. Longlasting exposure to light at night brings depression, a new study f
2、inds, at least in animals.The new data confirm observations from studies of people who work night shifts, says Richard Stevens of the University of Connecticut Health Centre. Mood disorders join a growing list of problems, including cancer, obesity and diabetesthat can occur when light throws life o
3、ut of balance by disturbing the biological clock and its timing of daily rhythms.In the new study, Tracy Bedrosian and Randy Nelson of Ohio State University exposed mice to normal light and dark cycles for four weeks. For the next four weeks, half of the mice remained on this schedule, and the rest
4、received continuous dim light throughout their night. Compared with mice exposed to normal nighttime darkness, those getting dim light at night lost their strong preference for sweet drinks,“a sign they no longer get pleasure out of activities they once enjoyed,” Bedrosian says.In a second test, mic
5、e were clocked on how long they actively tried to escape a pool of water. Those exposed to night lights stopped struggling and just floated in the water, a sign of “behavioural despair”,10 times as long as the mice that had experienced normal nighttime darkness. All symptoms of depression disappeare
6、d within two weeks of the mice returning to a normal lightdark cycle, the researchers report. The scientists also could quash the behavioural symptoms by injecting (注射)the brains of animals with a drug that prohibits the activity of certain molecules linked with human depression. This finding furthe
7、r suggests that light at night may cause something related to depression.Human studies linking nighttime light and mood disorders are important but cant easily detect molecular underpinnings (分子结构)as animal studies can,says George Brainard of Thomas Jefferson University. The new work, he says, sugge
8、sts that the change of the biological clock by light at night can be “an extremely powerful force in regulating biology and behaviour”1After being exposed to continuous nighttime light,the mice _Achanged their preferencesBescaped from the water more eagerlyCremained active as beforeDshowed less inte
9、rest in their favourites2What does the underlined word “quash” in Para. 4 probably mean?AStudy.BPredict.CEase.DCause.3We can learn from the last paragraph that _Alight at night may have practical valueBthe biological clock is beneficial to humansChuman mood disorders cannot be healed easilyDhuman st
10、udies are more important than animal studies4What is the main idea of the passage?ANighttime light may foster depression.BA drug has been found to cure mood disorders.CThe study on animals can be applied to humans.DHuman biological clock can be controlled by light.【要点综述】光照疗法可以治疗抑郁症,但是,新的研究表明长期暴露于夜晚的
11、灯光也可带来抑郁症,这项研究至少在动物身上得到了验证。1D细节理解题。根据“Compared with mice exposed to normal nighttime darkness,those getting dim light at night lost their strong preference for sweet drinks”可知,那些在夜晚持续接受暗淡灯光的老鼠失去了对于甜饮料的浓厚喜好,即没有那么喜欢甜饮料了,故选D项。2C词义猜测题。通过原文quash前面also可以断定,quash的意思等于前面一句话的意思,即症状消失了,故选ease“缓解,减轻”。3A推理判断题。根
12、据最后一句可知,灯光可以影响生物钟,生物钟的改变可以影响行为,故选择A项。4A主旨大意题。根据文章首段“Doctors sometimes prescribe light therapy to treat a form of depression in people who get too little morning sun.But too much light at other time may actually cause such mood disorders.”可知,本文主要讨论nighttime light与mood disorder或depression的关系,故A项正确。阅读下
13、列短文,从每题所给的A.B.C和D项中,选出最佳选项。 Experts believe that storms and severe weather in North America and Asia have disrupted bird flight paths across the world and swept huge numbers of bird species towards the British Isles.Birds flying to the other side of the Atlantic or to the Pacific to lay their eggs h
14、ave been trapped in Britain and Ireland, adding their numbers to native species, and causing great excitement in the bird-watching community.Local birdwatchers have already observed a total of 442 species in the British Isles this year. The highest number ever seen in one year is 445, in 2008.“We on
15、ly need four more to break our record,” said Lee Evans, who runs the British Birding Association. “With three months to go Im sure well do it.”Last month an extremely rare Siberian Rubythroat bird was seen in Scotland, sending hundreds of birdwatchers north in the hope of catching a glimpse of this
16、colourful Asian beauty. Another very uncommon bird, the bufflehead duck was cited in Cornwell and caused similar excitement. “I couldnt believe it,” said Evans. “The poor thing was completely knackered. It must have been blown to England by the storms while trying to fly from Canada to the southern
17、United States for the winter. Thats 3000 miles!”Evans said that global warming over the past decade was playing a key role in transforming bird movements across the world. In addition, melting Arctic sea ice may also be opening up bird flight paths over the North Pole, making it easier for birds fro
18、m the Pacific such as the slaty-backed gull and tufted puffin, both of which appeared in London earlier this year to reach Britain.Bird-watching is becoming an increasingly popular hobby among all age groups, added Evans. “A fifth of our members are under 18. This is a round-the-year hobby that you
19、can enjoy from the kitchen window or from a car. More and more people are bird-watching, and as a result more and more unexpected species are being spotted in the British Isles.”1. What is the passage mainly about?A. The results of global warming.B. Changes in the British bird population.C. Increasi
20、ng environmental pollution.D. Worsening British weather. 2. The underlined word “knackered” is closest in meaning to _. A. bored B. knocked C. spotted D. tired3. How many more bird species are needed to equal the British bird-watching record?A. 3.B. 4.C. 442. D. 445.4. According to the passage, whic
21、h of the following birds comes from Asia? A. Slaty-backed gull. B. Bufflehead. C. Rubythroat. D. Tufted puffin.5. Which of the following is NOT mentioned as a possible reason for seeing more bird species in Britain?A. An increase in the number of birdwatchers.B. A growth in the number of native spec
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