缺词填空
Where there is a will(意志), there is a way. The secret of s       is not much money but a strong will. In other words, a man can’t w        without a strong will. It is quite clear that there is nothing d________ in the world. If a person makes up his mind to do it, he will certainly r       his goal. A student should r        the following duties: we s       care about our parents; we have to study as h________ as possible, we must be honest and keep our words as well. E         of us should receive good education. Our parents send us to school to let us get k        and wish us to be a hard-working and successful person in the future. So when we fail, don’t lose heart. Keep on working u        we succeed. Make sure nothing could prevent you from trying.

What is the sky(天空)? Where is it? How high is it? What lies above it? These questions are hard 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(翼) . Planes cannot fly very high because when they go high, the air gets thinner. If we go up about 1,200 kilometers from the earth, we find there is no air.

    Perhaps(也许) we can answer some of our questions now. The sky is space(空间). In this space there is only the sun, the moon and all the stars.

6.What is the sky?

A. It’s the clouds       B. It’s space.     C It’s air      D It’s nothing

7. The sky _____

A. is blue        B. is white        C. is black     D. has no color

8. Planes cannot fly very high because _________.

A. the air becomes thinner                         B. the flying machine is not good       

C. people will be afraid if the planes fly too high      D. it is not necessary for planes to fly so high

9 If we go up about 1,200 kilometers from the earth, we find ___________.

A. there is more air   B. there is less air   C .there is nothing but air   D there is no air

10. In space there is _________.

A. nothing       B. air everywhere       C. everything       D. only the sun , the moon and all the stars

选择方框中的句子完成对话，其中有两项多余。

A:What’s the matter, Mrs. Smith?

B: 1. I can’t do any work, doctor.

A:Do you have a cough?

B:No. I don’t have a cough.

A: 2.

B:Yes, I sleep very well.

A:Do you have breakfast every morning?

B:No. I don’t have breakfast. And I have only a little food for lunch and supper because I want to keep thin(减肥).

A:Oh, I see.   3. You need to eat more food and have three meals a day.   4.

B:OK. I will do like that.

A: 5. 

B:Thank you very much.

A.I feel very well.

B.I hope you will get better soon.

C.Do you sleep well at night?

D.I’m not feeling well.

E.And do some exercise every day.

F.You need to eat less food.

G.There is nothing serious.

When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.

Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.

The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.

This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.

根据短文内容，选择最佳选项。 （10分）

1.What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

A．It looks even brighter.

B．It looks as if it is bent.

C．It looks as if it is moving.

D．It looks like drops of rain.

2.Scintillation also happens on 　　　　 according to the passage.

A．rainy days                             B．shiny days

C．cloudy days                            D．windy days

3.What can you see when you drop a rock into the water?

A．The rock gets broken.

B．The rock becomes unclear.

C．The water becomes much polluted.

D．The water does not move anymore.

4.The underlined word “observe” means “　　　　”.

A．watch            B．listen             C．draw             D．explain

5.Why is scintillation a problem for astronomers?

A．The stars never stay still.

B．It makes the stars too dark to see.

C．It makes astronomers feel too hot to work.

D．Astronomers cannot observe the stars clearly.