Question

“Up to two thirds of children don't get as much sleep as they should do, and this can make them nervous and slower at school，” researchers say.

So how long should young people sleep each night？The answer is between 8 and 10 hours.If you don't get enough sleep at night, you'll have less energy the next day.

But the researchers 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 stories 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 keeps working while you're asleep.To 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, suggesting 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 tomorrow!

1.What happens to children at school if they don't get enough sleep？__

A. They walk more slowly.

B. They can relax.

C. They watch more TV.

D. They do less well at school.

2.The main idea of the second paragraph is __

A. how much sleep we need

B. children don't get enough sleep

C. our brains never really go to sleep

D. TVs and computers are the problem

3.How does a bedtime story help children get a good night？__

A. It helps children relax and fall asleep peacefully.

B. Children lose more sleep.

C. Children have more energy.

D. Children get to sleep later.

4.Why is it better to sleep in a room without a TV or computer？__

A. You can read stories before you go to sleep.

B. You sleep better and get more sleep.

C. You have less energy.

D. Your brain works better.

5.What did the German scientists' experiment show？__

A. Sleep helps children learn to read.

B. Losing sleep means children don't learn well.

C. Your brain works while you are asleep.

D. Parents should read bedtime stories.

Answer

1.D

2.A

3.A

4.B

5.C

【解析】本文叙述了充足的睡眠的重要性。每晚人们的睡眠时间应是8到10小时，如果晚上没有足够的睡眠，第二天你将会有更少的精力。科学家通过实验证明，人们在睡觉时大脑还在一直工作。因此今晚一定要确保有充足的睡眠，然后明天才会有最好表现。

1.细节理解题。根据文中句子“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.”可知，如果学校里的孩子睡眠不足，他们在学校的表现会差一些。故答案为D。

2.段落大意题。根据第二段中的句子“So how long should young people sleep each night？The answer is between 8 and 10 hours.” 年轻人每晚应该睡多久？答案是8到10个小时。可知，这一段主要告诉我们每天应该睡眠多长时间，故答案为A。

3.细节理解题。根据文中句子The traditional“bedtime story” helps children to relax and fall asleep peacefully.可知，传统的“睡前故事”能帮助孩子们放松并安静地入睡。故答案为A。

4.推理判断题。根据文中句子“Children with TVs and computers in their bedrooms are more likely to sleep badly.” 卧室里有电视和电脑的孩子更容易睡不好。如果房间里没有电视和电脑，就会睡眠更充足更好一些，故答案为B。

5.细节理解题。根据文中句子“German scientists think that your brain keeps working while you're asleep. The result？The people who slept worked out the answer more quickly, suggesting that their brains had been trying to find the answer while the people were asleep.”德国科学家认为，在你睡着的时候大脑一直工作；睡觉的人更快地算出了答案，暗示在人们睡着的时候，他们的大脑一直试图找到答案。由此可以判断，德国科学家的研究表明，睡着的时候人的大脑仍然在工作。故答案为C。