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Sara: It is very1.h_______ today, isn’t it?

Sam: Yes. It’s too hot. 2.A______ in the future it will be very hot all the3.y______ round. I don’t think we can go to school4.o _____ go to work by bike.

Sara: 5.H_____ will we go there at that time?

Sam: By car. Everyone will have a 6.s_________ car.

Sara: Why not a big car?

Sam: Because a big car may use more fuel(燃料), and fuel will be very 7.e________ .

Sara: How can we do some jobs in such hot8.w _______ ?

Sam: We won’t do anything. Robots will do all the dull and hard work.

Sara: So people will have lots of9..f _______ time. They will have long 10.h________ .

Sam: That’s right. I’m looking forward to such a day.

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Did you sleep the day away on March 21? Well, you should have done that because it was World Sleeping Day. This is the one day of the year when people around the world care about their sleep and ask themselves a lot of questions about sleep.

Why do we need sleep? Nobody as yet can give a correct answer to this question. However, tests have shown that lack of sleep over about four weeks leads to a strong drop in body temperature, great weight loss and finally sickness.

Different people need different amounts of sleep. Eight hours a night is considered the average amount of sleep. For teenagers the least number of sleeping hours advised by doctors are ten hours for primary school students, nine for junior highs and eight for senior highs.

Some people seem to get along just fine with very little sleep at night. Leading American scientist Thomas Edison said that sleep was a waste of time. He did, however, take naps during the day. On the other hand, Albert Einstein, another great scientist, said he needed at least ten hours’ sleep a night.

Here are some of the most useful suggestions, for a good night’s sleep.

Go to bed regularly. Use your bed only to sleep. Don’t exercise in the evening. Keep the bedroom dark and quiet. Drink a glass of milk before sleep.

1.Lacking of sleep over four weeks leads to many problems, except ______.

A. drop in body temperature B. great weight loss

C. sickness D. memory loss

2.For primary school students, ____ hours’ sleep is the least.

A. Eight B. Nine C. Ten D. Eleven

3. _____ only took naps during the day, while ____ needed ten hours’ sleep.

A. Albert Einstein; Thomas Jefferson

B. Thomas Edison, Albert Einstein

C. Albert Einstein, Thomas Edison

D. Thomas Jefferson, Albert Einstein

4.Which is NOT a useful suggestion for a good night’s sleep?

A. Keep the bedroom dark and quiet

B. Drink a glass of milk before sleep

C. Do exercise in the evening

D. Go to bed regularly

5.Which is the best title of this passage?

A. Something About Sleep B. World Sleeping Day

C. A Good Sleep D. Amount of Sleep

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