Question

   Men have always wondered about the earth they live on and about the sky above them.

  When early men looked at the night sky，they asked themselves a lot of questions. They looked at the moon,and wondered what this strange bright object in the sky was. They did not understand why it changed its shape from night to night. They looked at the stars and planets. They also wondered why some of them changed their positions,while others did not.   

  They also thought about the shape of the earth,too. Most early people believed the earth was flat.

   In different parts of the world,there were different ideas about the universe. The ancient Greeks were the first people to study the universe more scientifically. In the sixth century BC,Pythagoras put forward the idea ^ that the world was round. However,he could not explain . why people at the bottom of the world did not fall off. It was not until the sixteenth and seventeenth ' centuries that scientists found the answers to some ' important questions. With the help of Galileo’s  telescope,people could see the sky more clearly,and find the positions of the stars and planets. Finally in 」 1665,Isaac Newton explained to the world what gravity   was and people at last understood why they did not fall -off the earth.    

根据材料内容选择最佳答案。

(   ) 1. What have Men wondered about?

A. The population of the earth.

B. The earth they live on.    

C. The sky above them.    

D. Both B and C. H

(   ) 2. Who was the first people to study the universe more scientifically?

A. The ancient Greeks.

B. The ancient Chinese.

C. The ancient Egyptians.

D. The Russians.

(   ) 3. When did Pythagoras put forward the idea that the world was round?

A. In the sixteenth century.

B. In the seventeen century.

C. In the sixth century BC.

D. In the seventh century BC.

(   ) 4. Who explained to the world what the gravity was?

A. The ancient Greeks. B. Galileo.

C. Isaac Newton. D. Pythagoras.

(   ) 5. Which of the following statements is wrong?

A. Early men wondered what the strange bright object was.

B. They also wondered why some planets changed their positions.

C. Pythagoras could not explain why people at the bottom of the world did not fall off.

D. With the help of Newton,people could see the sky more clearly.

Answer 1

 1 . D根据文章第-段可知人类一直对他们居住的星球以及头顶的天空感到好奇，故选D.

2. A根据第四段第二句话可知是古希腊人，故选 A.

3.C根据第四段第三句话可知是公元前6世纪 

4. C根据文章的最后一句话可知是牛顿，故选C.

5. D根据文章倒数第二句话可知是在望远镜的帮助下而不是牛顿，故选D.