摘要: M:The sky is covered with dark clouds, it's going to rain. You'd better take an umbrella. W:0K, I will. Q: What's the weather like?

网址:http://m.1010jiajiao.com/timu3_id_2376006[举报]

请仔细阅读下文,然后根据短文内容选择正确答案。
     If someone ask you, "What colour is the sky?"I think you will answer "Blue".I'm afraid that you will be
  wrong. The sky has no colour. It looks blue because we are looking at blue sunlight. The sunlight is
 shining on little bits of dust ( 灰尘) in the air.
     Is the sky full of air? I'm sure that you have asked this question, too. We know that there is air all
 around the world, but we couldn't fly very high because as we go higher, the air gets thinner. If we go far
  enough away from the earth, we find there is no air.
     Maybe we can answer some questions now. What is the sky? Where is it? It is all round the world. The
  sky is space (宇宙空间). In space there is nothing, but only the sun, the moon, and all the stars.
1. We often think the sky is blue because _____.
    A. we think it is so
    B. we like this colour
    C. we don't have other colours
    D. we don't like other colours
2. The sky is _____.
    A. a star round it
    B. a big ball with air all
    C. full of dust
    D. space with  the sun, the moon and the stars
3. What makes us think the sky is blue?
    A. Dust in the sky.
    B. Air and blue light.
    C. Our own feeling.
    D. Both A and B.
4. We can't fly very high because _____.
    A. there's too much air in the high place
    B. the high sky is full of dirty air
    C. there is no air in the high enough sky
    D. the sun is too hot
5. The writer of the passage _____.
    A. tells us something about the sky
    B. wants to tell us not to go to space
    C. once flew in the sky
    D. enjoys answering people's questions
查看习题详情和答案>>
阅读理解。
     If someone asks you "What color is the sky", I think your answer will be "blue". I'm afraid that you
are wrong. Because the sky has no color. 
     What's in the sky? Is the sky full of (充满) air? I'm sure that you have asked these questions. We all
know that there is air around the world. We can not live without air. Planes can't fly very high because
as we go higher, the air gets thinner (更稀薄). If we go far enough away the earth, we can find that there
is no air. The sky is space (太空). In the space there is nothing but the sun, the moon and the stars.
       People always want to know more about other worlds in space. They have looked at them through
telescopes (望远镜) and in this way they have known much. They know a lot about the moon now. but
they want to know more about space. I'm sure they will go farther and farther until they know all about it.
1. It's not really right _____. 
A. to answer questions about space  
B. to answer questions about the sky 
C. to say that the sky is blue        
D. to say that the sky has no color
2. _____ helps plane fly. 
A. The sky    
B. The air    
C. Space  
D. The sun
3. There is no air _____. 
A. around us    
B. around the eart  
C. in the sky
D. high enough in the sky
4. There is _____ in space. 
A. air                            
B. nothing 
C. nothing but the sun, the moon and the stars 
D. nothing or the sun, the moon and the stars
5. With telescopes people can know _____ in space. 
A. much    
B. nothing      
C. everything    
D. all
查看习题详情和答案>>

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网