学位英语

阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子做出判断。如果该旬提供的是正确信息，请在答题卡上把A涂黑;如果该句提供的是错误信息，请在答题卡上把B涂黑;如果该句的信息文章中没有提及，请在答题卡上把C涂黑。

Sleeping

People who sleep for more than eight hours a night do not live as long as those who sleep for six hours，according to the biggest study yet into sleep patterns and mortality(死亡率).

Scientists have no explanation for the findings and do not know if they mean people who like a lie.in(睡懒觉)Can extend their lives by sleeping less. .

Although it is a common belief that sleeping for at least eight hours a night is vital for health and well—being.the six.year study involving more than 1.1 million Americans older than 30 found that those who slept for 1ess than eight hours were far from doing themselves any long—term harm。

“Individuals who now average 6.5 hours of sleep a night Can be reassured that this is a safe amount of sleep.From a health standpoint。there is no reason to sleep longer,” said Daniel Kripke ，a professor of psychiatry(精神病学)at the University of California，San Diego.

Dr.Kripke said.“We don’t know if long sleep periods lead to death.Additional studies are needed to determine if setting your alarm clock earlier will actually improve your health.”

The scientists.who were funded by the American Cancer Society，found也at the best survival rates were among the men and women who slept for seven hours a night.Those who slept for eight hours were 12 per cent more likely to die during t11e six—year period of the study, when other factors such as diet and smoking were taken into account.

Even those who spent a mere five hours a night in bed lived longer than those who slept eight or more hours.However, an increasing death rate was found among those who slept for less than five hours.

Dr.Kripke said.“Previous sleep studies have indicated that both short-and long-duration(持续时间)sleep had higher mortality rates.However, none of those studies were large enough to distinguish the difference between seven and eight hours a night，until flow.”

16 More than 1’1 million Americans participated in the six-year study.

A Right B Wrong C Not mentioned

17 All the participants were from the state of California.

A Right B Wrong C Not mentioned

18 The study shows that the longer you sleep each night，the longer you’11 live.

A Right B Wrong C Not mentioned

19 The findings indicate that it is all right to sleep for 6.5 hours a night.

A Right B Wrong C Not mentioned

20 Most of the participants slept for 7 hours a night during the study.

A Right B Wrong C Not mentioned

21 Sleeping for less than 5 hours each night is better than sleeping for 5 hours

A Right B Wrong C Not mentioned

22 The study was the first to tell the difference between 7 and 8 hours of sleep a night

A Right B Wrong C Not mentioned

答案解析

16 A 从文章的第三段可以得知，有一百一十多万美国人参与了这项历时六年的研究。

17 C 文章第四段只是提及该项研究的负责人之一是一位来自加州大学的精神病学教授，但并没有说研究对象来自哪里。

18 B 从文章的第一句便可得知，一个人并非每晚睡眠时间越长就越长寿。

19 A 从文章的第四段可以得知，一个人平均每晚睡眠六个半小时就足够了。

20 C 文章第六段只是提及研究发现，每晚睡眠七小时的男女寿命最长，但并没有说多数参与研究者在研究进行期间是否每晚睡七小时。

21 B 从文章第七段可以得知，每晚睡眠五小时者要比每晚睡眠八或更多小时者长寿，但每晚睡眠不足五小时者死亡率将随之升高。

22 A 从文章的最后一句可以得知，该项研究首次区分出每晚睡眠七小时与八小时之间的差别。

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