Want a good night's sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.

These things have bright lights. When our eyes see bright lights just before sleep, our sleep patterns (模式) change, a study has found.

Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.

    But if you read a paper book before sleeping, you won't have this problem. This is because light from a bedside lamp (台灯) does not go straight into our eyes.

    Also, if you are watching a television from across the bedroom, you won't have problems falling asleep. The TV sends light to us from a distance, so the light won't be as strong.

1.The writer tells us to turn off the computer          before bed time.

    A. half an hour     B. an hour        C. two hours       D. three hours

2.Which of the following may make us sleepless?

    A. Reading a newspaper.                 B. Talking on QQ.

    C. Reading a book.                      D. Watching TV.

3.Why can't we sleep well if we use a computer before bed time?

    A. We think it is daytime if we leave computers on.

    B. We feel too excited to sleep after using computers.

    C. Lights from computers are brighter than other lights.

    D. Lights from computers can change our sleep patterns.

Want a good night's sleep? Then turn off your computer, cell phone or PSP two hours before you go to bed.
These things have bright lights. When our eyes see bright lights just before sleep, our sleep patterns (模式) change, a study has found.
Our body clock starts shutting us down for bed at 9 or 10 pm. But bright lights make our minds think that it is still daytime. That wakes us up and leaves us sleepless, experts say.
But if you read a paper book before sleeping, you won't have this problem. This is because light from a bedside lamp (台灯) does not go straight into our eyes.
Also, if you are watching a television from across the bedroom, you won't have problems falling asleep. The TV sends light to us from a distance, so the light won't be as strong.
【小题1】The writer tells us to turn off the computer         before bed time.

There are four people in my family. We all like traveling(旅游). This summer we plan to go to Tibet on vacation. But we can’t decide how to get there, because we don’t agree with each other about the question. My father wants to go by plane(飞机). But my mother, my brother and I don’t agree. We don’t think taking a plane is safe, although it’s fast. My mother and I want to go by train. But my father and my brother think it’s too slow(慢的). I say to them, “Why not? A train isn’t fast, but it’s safe and cheap, and we can also enjoy many interesting things on the way.” My brother thinks it’s good to go by car. He says, “Tibet isn’t too far from our city. If we leave at six in the morning in our car, we can arrive by six in the evening.” But my parents and I think it’ll cost(花费) too much. And there may be lots of cars on the way. Can you give us a piece of good advice?

根据短文内容，判断下列句子的正(T)误(F)。

（   ）56. The family is going to Tibet for the summer vacation.

（   ）57. When the writer says “the question”, he means(意思是) they don’t know how far it is to Tibet.

（   ）58. From the passage, we can know “safe” means “快的” in Chinese.

（   ）59. It’s twelve hours’ drive(n. 车程) from the writer’s city to Tibet.

（   ）60. My parents and I think going by car is expensive and crowded.

If we leave a basin of water in ______ (freeze) weather, it