What is the sky？ Where is it？ How bright is it？ What lies above it？ These questions are difficult to answer, aren’t they？

Is the sky blue？ The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings. Planes can’t fly very high because the air gets thinner when they go up higher. If we go up about 1,200 kilometers from the earth, we’ll find no air there.

When we talk about the sky, we usually mean the atmosphere around the earth. It is like a very thick “cover” over the earth and keeps it warm. Without the “cover”, the earth would be a very cold place and nothing could live on it.

Looking up above us, you will see the blue sky with white clouds. It is usually light blue, but the sky would be dark blue if you go to the top of the highest mountains. And you will see fewer clouds between you and the sun.

And if you sit in a spaceship high above the earth, there is no air at all. The sky would be so dark that its color would be black.

Sometimes the sky doesn’t look blue. When the sun rises and falls, you will see red, orange, and other colors in the sky. These are the most beautiful moments of the day.

Now you may understand that we see colors because the air scatters (散射) the sunlight. Light travels through the air. Without air, there would be no light and no colors.

1.Planes can’t fly very high because ____________.

A．there is air around the world

B．the air gets thinner when they go up higher

C．it’s warmer in the sky

D．the air gets thicker when they go up higher

2.We can see colors of the sky because ____________.

A．the sun rises and falls every day

B．the sky has lots of colors

C．the air scatters the sunlight

D．the sunlight has many colors

3.Which of the following is TRUE？

A．There is little air without light and colors in the sky.

B．The sky will look red, orange and other colors at noon.

C．The sky has only one color when the sun rises and falls.

D．The sky is dark blue if you go to the top of the highest mountains.

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任務(wù)型閱讀。

閱讀一篇文章，根據(jù)文章信息，用合適的單詞完成表格，每空一詞。

We would like some help!

Sandy: Please help me. I am a girl from America. I can’t learn Chinese well. My Chinese teacher always speaks too fast. Many of my friends think Chinese is easy. But I don’t! I can’t get many points. Sometimes, I can’t understand what the teacher says in class. How I hope I can have a pen friend from China.

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Children

Problems

_2._______.

Sandy

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Thinking Chinese is 4.

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Jim

Not being tall 6. to play basketball

To be taller

To be a good basketball 7.

Joan

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Danny

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One day, there was a blind man called John sitting on the bench with a hat by his feet and a sign that read, "I am blind. Please help me. "

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The publicist said, "I just wrote the message a little differently. "He smiled and went on his way.

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D. The farmer.

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C. By his voice. D. By his coins.

4.When did the story happen?

A. In spring. B. In summer.

C. In autumn. D. In winter.

5.What can we learn from the passage?

A. Publicists are always friendly and helpful.

B. We can get more money by changing a sign.

C. The blind man is very stupid so he has little money.

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They sometimes go to cafes, fast food restaurants, shopping centers and big bookstores.

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A. School work.

B. After-class activities.

C. Subjects.

D. Things to do in the spare time.

2.Why do students work hard at school in Singapore?

A. Because they have a lot of homework to do every day.

B. Because they have to go to remedial classes.

C. Because they want to have a good future.

D. Because they have many outside school activities.

3.What does the underline sentence mean in the first paragraph?

A. Students are afraid of the exams.

B. Students have a headache before an exam.

C. Students have too many exams.

D. Students are in poor health because of exams.

4.What is the best title of this passage?

A. Middle school students in Singapore.

B. Hard life for students in Singapore.

C. Remedial classes in Singapore.

D. Colorful Life of Middle School Students in Singapore.

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Their parents say, “Our children are very good. They like pop music, but they play it in their own rooms. They help with the housework at home. You know they feel bored sometimes because there’s nothing interesting in the neighborhood, no clubs and no sports. They have nothing to do.

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Title: Teenagers Today

The 1.teenagers can do

Having part-time jobs;

Driving cars;

Getting married when they are a little bit older.

The reason why they feel bored

There isn’t 2.interesting in the neighborhood.

The view（觀點(diǎn)） from their parents

They are good and do some3.at home.

The opinion from one of the teachers

Loud music can make them feel energetic and excited.

They work hard and can get good 4.later.

Conclusion

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2.A. same B. as same C. so good D. the same

3.A. suitable B. fitted C. able D. like

4.A. take B. play C. have D. choose

5.A. which B. what C. if D. whether

6.A. feel B. realize C. to feel D. to realize

7.A. helps B. makes C. make D. help

8.A. both B. between C. from D. either

9.A. art B. music C. sports D. acting

10.A. ride B. feed C. draw D. treat

11.A. success B. skill C. hobby D. fact

12.A. good B. the best C. better D. best

13.A. examine B. have examined C. examining D. examined

14.A. find out B. look out C. find D. look at

15.A. what do they think of B. how do they think of C. what they think of D. how they think of

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