Question

【題目】Up to 65% of children don't get as much sleep as they should do, and this can make them nervous and slower at school, scientists say.

So how long should young people sleep each night? The answer is between eight and ten hours. If you don't get enough sleep at night, you'll have less energy the next day.

①But the scientists say many children have missed out on 4, 500 hours of sleep by the time they are seven years old. They say that children miss sleep because they have TVs and computers in their rooms，and busy parents don't read to their younger children at night any more. The traditional "bedtime story" helps children to relax and fall asleep peacefully. Children with TVs and computers in their bedrooms are more likely to sleep badly, and to get less than eight hours' sleep. Even losing one hour's sleep a night can mean that children do less well at school.

German scientists think that your brain(大腦)keeps working while you are asleep.②To show that they were right，they gave two groups of people a problem to work out. One group went to sleep, and the other group stayed awake. The result? The people who slept worked out the answer

more quickly. This showed that their brains had been trying to find the answer while the people were asleep. So, make sure you get enough sleep tonight, and you'll be at your best tonight, and you'll be at your best tomorrow!

【1】What problem do more than a half of students have?

A. They don't get on well with their studies.

B. They don't have enough sleep at night.

C. They don't relax themselves at school.

D. They don't follow their school rules

【2】According to the third paragraph, what influences many children's sleep worst?

A. Their parents' noise. B. Bedtime stories.

C. Too much homework. D. TV and computers.

【3】The German scientists' experiment showed that _______.

A. our study depended on our sleep

B. our sleep helped improve our health

C. our brain worked while we were asleep

D. our brain worked faster during sleep

【4】This passage is mainly written for _______.

A. parents B. school teachers

C. scientists D. young students

Answer 1

【答案】

【1】B

【2】D

【3】C

【4】D

【解析】

試題本文是一篇議論文，反映的是青少年睡眠不足的問題。作者結(jié)合德國科學(xué)家的實驗，分析了睡眠不足的原因，原來人的大腦在我們睡覺時一直在工作。建議人們確保晚上有充足的睡眠，才會處于最佳狀態(tài)，擁有最美好的明天！

【1】題意：一半以上的學(xué)生有什么問題？考查細節(jié)理解題。根據(jù)開頭Up to 65% of children don't get as much sleep as they should do，可知高達65%的兒童睡眠不足，故選B。

【2】題意：根據(jù)第三段，什么影響許多孩子的睡眠最差？考查細節(jié)理解題。根據(jù)Children with TVs and computers in their bedrooms are more likely to sleep badly, and to get less than eight hours' sleep.，可知孩子臥室里有電視和電腦更容易睡得不好，故選D。

【3】題意：德國科學(xué)家的實驗表明 。考查細節(jié)理解題。根據(jù)German scientists think that your brain keeps working while you are asleep.，結(jié)合實驗結(jié)果，可知我們的大腦在睡覺時一直在工作，故選C。

【4】題意：這段話主要是寫給 的。考查細節(jié)理解題。根據(jù)第二段的過渡句So how long should young people sleep each night? The answer is between eight and ten hours.，可知是寫給年輕人的，故選D。