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Do you know why you sleep? You may think it’s because you’re tired. Or perhaps you’ve been told sleep is good for you. Yet no one knows exactly why or how people sleep.

Until the early 1950s, most scientists thought the body and brain rested during sleep. Then a scientist watched people sleep. He noticed that during periods of between 5 and 30 minutes each, sleepers’ eyes made rapid movements, as if they were watching something. He called these periods REM sleep, for Rapid Eye Movement. Periods when sleepers’ eyes did not move he called non-REM sleep.

Whenever the scientist woke people during REM sleep, they were having vivid dreams. Measurements showed that sleepers’ pulses（脈搏）went up quickly during REM sleep. Their breathing, heartbeat, and the blood going to the brain also increased. Far from being a time of rest, REM sleep is a time when the body is hard at work. Scientists still don’t know the reason for this. Some believe REM sleep makes learning easier. Babies spend a lot of time in REM sleep. Because of this, some scientists believe that REM sleep helps the brain grow. Others think REM sleep is a time for the brain to empty the day’s garbage.

One thing all the scientists agree on is that sleep is necessary. Without enough sleep, people make mistakes. Most major car accidents happen during the early morning hours, when people are sleepiest.

1.During REM sleep, a person’s breathing and heartbeat ________.

A．stop   B．increase     C．decrease   D．stay the same

2.Which word in paragraph（段落）3 means “colorful and lively”?

A．easier         B．empty         C．vivid   D．quickly

3.Which paragraph tells what happens when people don’t get enough sleep?

A．1         B．2         C．3         D．4

4.What is the main idea of the article?

A．REM sleep helps the brain grow.

B．REM sleep has been watched and recorded by scientists.

C．REM sleep is a time to empty the day’s garbage.

D．REM sleep is an active time when the body is hard at work.

5.You can decide from the article that REM sleep ________.

A．has a restful effect on people

B．can be avoided with lots of sleep

C．is something that all people experience

D．is something that all scientists agree on

閱讀下面閱讀材料，然后從各小題所給的四個選項中選擇一個最佳答案。

Henry: I find the Internet is very good for shopping. I use more and more for buying books and CDs, and I even bought some clothes over the Internet. The other thing I can do is to book(預訂) travels over the Internet. I booked a cheap flight once. It was very easy, and it was really good.

David: I use the Internet for games. I play chess with people all around the world. Last night I had a game with someone from Japan. I also download (下載)games from the Internet, so I can have any game I want.

Peter: I use the Internet for anything I need to help me with my schoolwork. I use the online dictionaries, encyclopedias(百科全書) and magazines. It’s great because I can download pictures or articles and use them to help my homework. It’s very easy to use and it’s free, so I like it.

Tony: Well, the main thing I use the Internet for is to e-mail. I usually write to my customers(顧客) by e-mail, and my customers answer me by e-mail, too. We probably send and receive four or five hundred e-mails a month. But of course, I also use e-mails to keep in touch(保持聯系) with friends and family. My daughter is in Australia and we send e-mails to each other every day.

1.________　prefers to use the Internet to buy things.

A. Henry?????? B. David??????? C. Peter?????? D. Tony

2. David’s hobby is to 　__________?? on the Internet.

A. read books?? B. book flights??

C. play games?? D. download pictures

3.Peter can use the Internet to ____________easily.

A. play chess? B. do schoolwork

C. do some shopping D. talk with his daughter

4.From the passage we know that 　???? 　　.

A. Peter is a teacher??????????? B. Tony is a businessman

C. David is an engineer???????? D. Henry is a bookseller

5.Which of the following is NOT true?

A. Henry had an experience of using the Internet to book a cheap flight.

B. David had a game with a Japanese over the Internet one night.

C. Tony often e-mails to his customers, friends and family.

D. Peter needs to pay for what he gets from the Internet.

Do you often talk with your parents? Here is some advice on how to talk with them.

Try to start your talk with something fun. This will make talking easier. For example, ask them questions about their day. How’s work? They love this.

Make it clear what you want to tell your parents. If they have an opinion, let them finish and don’t stop their talking. Ask them to do the same for you.

Show them respect (尊重) by listening to them carefully. Look them in the eye (直視).

Be honest. Honesty builds trust (信任). Life is good when your parents trust you.

If your parents don’t understand, that’s OK. It doesn’t mean they don’t love you. Sometimes you have to explain the things to them again.

When you finish the talk, thank them for listening. Say something like “thanks”. It will let them know this is important to you, and make them want to do it more often.

1.If you want to start the talk easily, you should say something        at the beginning.

A．fun              B．exciting           C．sad              D．unhappy

2.While talking to the parents, you should look them in the eye to show you     them.

A．dislike            B．understand        C．respect           D．agree with

3.When the parents don’t understand you, you can      .

A．ask them to stop                        B．argue with them

C．look them in the eye                     D．explain your idea to them again

4.When you finish the talk, you should       your parents for listening.

A．say goodbye to     B．thank             C．say sorry to        D．ask

5.What’s the main idea of this passage?

A．We should thank our parents.

B．It’s important to understang our parents.

C．We should love our parents.

D．Some ways to communicate with our parents.