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Do you know why you sleep? You may think...

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(脉搏)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

 

1.B 2.C 3.D 4.B 5.A 【解析】略
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Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, and in particular, their parents, don’t know them as well as their friends do. In large families, it is quite often for brothers and sisters to fight with each other and then they can only go to their friends for advice.

It is very important for teenagers to have one good friend or a circle of friends Even when they are not with their friends, they usually spend a lot of time talking among them on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.

However, parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one.

Who chooses your friends?

Do you choose your friends or your friends choose you?

Have you got a good friend your parents don’t like?

Your answers are welcome.

1.Many teenagers think their ________ know them better than their parents do.

A.friends        B.brothers    C.sisters        D.teachers

2.When teenagers stay alone, their usual way of communication is ________.

A.to go to their friends

B.to talk with their parents

C.to have a discussion with their family by phone

D.to talk with their friends on the phone

3.Which of the following is different in meaning from the sentences “Some parents may even stop their children from meeting their friends?

A.Some parents may even not allow their children to meet their good friends.

B.Some parents may even ask their children to stay away from their good friends.

C.Some parents may even not let their children meet their good friends.

D.Some parents may want their children to meet their good friends at the stop.

4.Which of the following sentences is right according to the passage?

A.Parents should like everything their children enjoy.

B.In all families children can choose everything they like.

C.Parents should try their best to understand their children better.

D.Teenagers can only go to their friends for help.

5.The sentence “Your answers are welcome” means“________”.

A.You are welcome to have a discussion with us.

B.We’ve got no idea, so your answers are welcome.

C.Your answers are always correct.

D.You can give us all the right answers.

6.Which is the best title of the passage?

A.Only Parents Can Decide  B.Parents and Children

C.Teenagers Need Friends   D.A Strange Question

 

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Many cultures have different ideas about why people catch colds. For example in the United States, some people think that you can catch a cold if your feet get cold. So, mothers tell small children to wear warm boots in the winter. In other places, including parts of the Middle East, some people believe that strong winds cause colds. So, on trains and buses, people usually don’t like to sit next to open windows. In parts of Europe, some people think that wearing wet clothes will give you a cold. They say that after you go swimming, you should quickly put on dry clothes. Today, scientists know that colds are caused by a virus(病毒). But the old ideas are still very strong, and many people still follow them to avoid(避免)getting ill.

1.What is the main idea of this reading?

A.People still believe old ideas about why they catch colds.

B.Colds are the biggest health problem in the world.

C.Some people think that strong winds cause colds.

D.You should take good care of your health in winter.

2.Which is NOT a cause(成因)of colds in the reading?

A.bad food    B.wet clothes        C.a virus        D.strong winds

3.In "people still follow them to avoid getting ill", what does "them" mean?

A.scientists   B.old ideas    C.colds  D.dry clothes

4.According to the reading, which of the following is NOT true?

A.There are many different ideas about how people catch colds.

B.Scientists don’t know how people catch colds.

C.Some people think that wearing wet clothes gives you a cold.

D.In the U.S., many small children wear boots in winter.

5.Many people in different countries have ________ ideas about why people catch colds.

A.no       B.one    C.the same   D.different

 

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Blue Water World

A great place for the whole family

We have...

* a gym

* a hot spring bath

* swimming pools

* a cinema

all with activities or lessons for both you and your children

Price: ¥80 a person

¥40 for children under 14

Open: 11:00 a.m.~ 11:00 p.m. except Monday

The fun never stops at Blue Water World!

Telephone: 555-5683/555-5686

Website: www.bluewaterworld.com.cn

1.Mr. Smith wants to go to Blue Water World with his family, so they can go there ________.

A.at 5:00 pm on Monday      B.at 10:00 am on Tuesday

C.at 2:00 pm on Sunday        D.at 11:00 am on Monday

2.Who would most likely go to Blue Water World often?

A.Mr. Wang; he loves taking a hot spring bath.

B.Miss Gao; she is looking for a place to go fishing.

C.Mr. Chen; he enjoys swimming in the early morning.

D.Mrs. Jin; she needs a quiet place to talk about business.

3.Mr. Lin wants to go to Blue Water World with his eight-year-old twin sons this Saturday. How much will they have to pay?

A.¥80  B.¥240         C.¥160         D.¥40

4.If you go to Blue Water World, you can do all the following things there except _______.

A.watching movies                 B.doing exercise

C.taking a bath                   D.eating Italian food

 

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Dear friends,

My name is Helen. I’m 12 years old. I   36   from Taxas, America. I’m really   37   in Chinese geography. It’s fun! And I hope you can tell me more. I like hamburgers best,   38   I try to eat them twice a week   39   it’s a kind of   40   food. And I like to drink lemon   41   . As for sports, I often go swimming with my parents on weekends.

I   42   in Cobb Street School. My   43   subjects in school are ME and art. They are really fun! After school, I like to go to the   44   with my family or friends. I like action movies and cartoons. They’re   45   How about you? Do you often go to the cinema with your family or friends?

Yours,

Helen

1.A.come       B.comes        C.coming       D.to come

2.A.different B.interested C.same     D.great

3.A.so          B.and        C.but          D.or

4.A.because B.with          C.and          D.or

5.A.Asian       B.delicious    C.healthy       D.unhealthy

6.A.tree      B.food C.juice           D.game

7.A.study       B.start         C.ride           D.meet

8.A.like     B.hate         C.favorite      D.first

9.A.library     B.playgroundC.hospital     D.cinema

10.A.boring   B.exciting      C.awful         D.difficult

 

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— ________ do I write the name?

— Write it in the box. OK, then click “save” again.

A.Where        B.What C.When          D.Why

 

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