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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.
But 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
were 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 (大脑) keeps working while you are 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.
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!
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
B. tried, bored and worried
C. afraid, alone and angry
D. dull, lazy and crazy
B. Bedtime stories.
C. Too much homework
D. TV and computers
B. our sleep helps improve our health
C. our brain works while we sleep
D. our brain works faster during sleep
B. school teachers
C. scientists
D. young students
根据短文内容，从A到F中选择相应的中心词。（方框中有一个选项是多余的）
| A．Communicating B．Sleeping C．Relaxing D．Eating E．Working F．Shopping |
A Day in Your Future Life
People used to know more or less how their children would live. Now things are always changing and we don’t even know what our own lives will be like in a few years. Let’s see what scientists tell us about the future.
1．You go to the kitchen when you get home. The foods are prepared and sent to you. You ordered them by computer an hour ago. You said for them through bank cards before they arrived. Nobody uses cash（现金） any more.
2．What’s for lunch? In the old days, you used to go to a fast food restaurant to get a hamburger and some coke. Now you use your special machine to find out which foods your body needs. Your food-machine makes you what you need.
3．After lunch, you go down the hall to your home office. Here you have everything you need to do your work, You never have to go out to work anymore.
4．Your information screen says that you’re received a message from a friend in America. Your computer can turn English into Chinese. Your friend’s face appears on the screen, and the Chinese words appear at the bottom.
5．You finish working and go back to your living room. You turn on the TV and look through the list of new movies. It’s a like having a video store in your home. How about a movie tonight?
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