题目内容
15.Judging from recent surveys,most experts in sleep behaviour agree that there is virtually an epidemic of sleepiness in the nation."I can't think of a single study that hasn't found Americans getting less sleep than they ought to,"says Dr David.Even people who think they are sleeping enough would probably be better off with more rest.The beginning of our sleepdeficit crisis can be traced back to the invention of the light bulb a century ago.From diary entries and our personal accounts from the 18th and 19th centuries,sleep scientists have reached the conclusion that the average person used to sleep about 9.5 hours a night."The best sleep habits once were forced on us,when we had nothing to do in the evening down on the farm,and it was dark."By the 1950s and 1960s,the sleep schedule had been reduced dramatically,to between 7.5 and 8 hours,and most people had to wake to an alarm clock."People cheat in their sleep,and they don't even realize they're doing it,"says Dr David."They think they're okay because they can get by on 6.5 hours,when they really need 7.5,8 or even more to feel ideally energetic."
Perhaps the mostmerciless robber of sleep,researches say,is the complexity of the day.Whenever pressures from work,family,friends and community increase,many people consider sleep the least expensive item on their programme."In our society,you're considered dynamic if you say you need only 5.5 hours'sleep.If you've got to get 8.5 hours,people think you lack drive and ambition."
To determine the consequences of sleepdeficit,researchers have put subjects through a set of psychological and performance tests requiring them,for instance,to add columns of numbers or recall a passage read to them only minutes earlier."We've found that if you're in sleepdeficit,performance suffers,"says Dr David."Shortterm memory is weakened,as are abilities to make decisions and to concentrate."
24.What is the main topic of the passage?A
A.Research on the causes and consequences of sleepdeficit.
B.The epidemic of sleepiness in the modern times.
C.The history of people's sleeping patterns.
D.The minimum of our sleeping hours.
25.Which of the following is Dr David's opinion?D
A.People who think they are sleeping enough are better off than those who don't.
B.Some people can remain energetic with only 6.5 hours'sleep a night.
C.If they get 8.5hours'sleep,people will be full of drive and ambition.
D.People's mental power suffers if they are lacking in sleep.
26.People in the 18th and 19th centuries slept about 9.5 hours a night becauseC.
A.they were forced by their parents to do so
B.they knew what was best for their health
C.they had no electricity
D.they were not so dynamic and ambitious as modern people are
27.What does the word"subjects"in Paragraph 4mean?C
A.Persons or things being discussed or described.
B.Branches of knowledge studied in a school.
C.Persons or things being treated in a certain way or being experimented on.
D.Any member of a state apart from the supreme ruler.
分析 本文主要讲了研究员对睡眠不足对人类的影响做试验研究.
解答 24.A 细节理解题.根据To determine the consequences of sleep-deficit.为了确定睡眠不足的后果.本文主要讲了研究员对睡眠不足对人类的影响做试验研究.所以答案选A.
25.D 细节理解题.根据We've found that if you're in sleep deficit,performance suffers,"says Dr.David."Short-term memory is weakened,as are abilities to make decisions and to concentrate."我们发现如果睡眠不足,行为会受到影响,"Dr.David说,"短期记忆能力减弱,像做出决定和集中注意力等都会受到影响.所以答案选D.
26.C 推理判断题.根据"The best sleep habits once were forced on us,when we had nothing to do in the evening down on the farm,and it was dark."最好的睡眠习惯是被迫养成,当我们晚上在农场里什么也没做的时候,天已经黑了.可以推断出他们没有电,所以答案选C.
27.C 猜测词义题.根据through a set of psychological and performance tests requiring them,通过一系列他们的心理和性能测试.subjects指的是被测试的人或者物,故选C.
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.
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