World Sleep Day is held on 21 March every year. It was set up in 2001.

The aim of World Sleep Day is to celebrate the benefits of good and healthy sleep. Events involving discussions,presentations of educational materials and exhibitions take place around the world and online.

Sleep quality plays a key role in people’s health. Researchers say that there are a lot of advantages if we always get enough sleep. We can be smarter,thinner,healthier and more cheerful. Also we’re to have better skin,better memories and longer lives. When you lose even one hour of sleep for any reason,it will influence your performance the next day.

In general,adults are thought to need at least eight hours of sleep a night,but a recent survey found that,on workdays,only 21% of them really get a full eight hours of sleep,and another 21% get less than six. For teenagers,a healthy amount is about eight to nine hours per night. However,about 80% of high school students don't get enough sleep because of their schoolwork or some bad habits.

27% of people throughout the world have sleep problems. Now there are over 80 kinds of sleep disorders,and most people know little about their danger. So,for our good life and work,it^'s necessary for us to realize the importance of sleep and try to have a good sleep.

根据短文内容，回答下列问题。

1. How long has World Sleep Day been celebrated so far?

2. What is the purpose of World Sleep Day?

3. What will happen if we sleep one hour less than we should?

4. Why don't most high school students have enough sleep?

5. What suggestion will you make about our better sleep?(请自拟一句话作答)

A car stopped outside Cherry Hotel and a young man got out. Mrs Smith said to the young man, “What can I do for you,sir?”

“Excuse me ,” the young man said ,“I am 11 for my uncle,Mr White. He has been away from home s 2 two days ago. I think he is staying here. ” “Yes,he was ,” Mrs Smith said. “But I'm afraid that he went back to London yesterday. ”

“Oh,dear ,” said the young man,looking sad ,“I went to his house,but I was t 3 by his children that he was going to stay here until the end of the week.

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“He should let me k 6，” the young man said. “I wrote him a 17 ,saying that I was coming.

Well,since he isn’t here. I won’t wait any longer. ”

The young man thanked Mrs Smith and went out. Mrs Smith watched h 8 leave. When his car couldn’t be seen,she called out ,“You can come out now,Mr White. He’s gone. ”

Mr White came out of the bedroom. “Many thanks,Mrs Smith ,” he said,laughing. “You did very w 9. The young man is my nephew (侄子) .When he n 10 money,he will look for me everywhere.

Next time he won’t tell me by writing me a letter. ”

1. 2.3. 4.5.

6. 7.8. 9. 10.

5. 我的电脑不再正常工作了。

My computer works properly.

4. 这个智能手机似乎能够满足我的需要。

It seems that this smartphone can.

3. 他的汽车看起来总是跟新的一样。

His car always looks.

2. 为了赶上早班车，我们必须现在就走。

We have to go now we can catch the early bus.

1. 他太忙了，没有时间放松。

He ishave any time to relax.

() 5. After Millie home school,she started to do her homework at once yesterday.

   A. returns;from   B. returns to;at   

    C. returned;from   D. returned to;at

() 4. 一 Daisy,look at your bedroom. What a mess! — Sorry,I'll right now.

   A. put up it   B. clean up it   C. put it up   D. clean it up

() 3. Liu Xing doesn’t know to do with his robot,and I don't know to deal with my pet.

   A. how;how   B. what;how   C. what;what   D. how; what