Men have always wondered about the earth they live on and about the ①_____ 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.

         ②他们也思考地球的形状。 Most early people believed the earth was flat.

         ③In 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. ④With 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 (重力) was and people at last understood why they did not fall off the earth.

1.在文中①处填写一个单词，使得句意完整、上下文通顺。___________________

2.根据文章内容回答问题。

What questions did early men ask themselves when they looked at the night sky? Write down one of them.

_________________________________________________________________________

3.将文中②句翻译成英语。

_________________________________________________________________________

4.将文中③句翻译成汉语。

_________________________________________________________________________

5.写出文中④句的同义句，每空限填一词。

Galileo’s telescope made _________________ for people to see the sky more clearly, and to find the positions of the stars and planets.

 

The Sun's Family

　　The earth is not the only body that travels around the sun. With it are eight other planets(行星), fellow members of the sun's family.

　　Two of them are nearer while the other six are farther from the sun than the earth is. The farther they are, the longer trips they make around the sun. People noticed long ago that these made travelling bodies move around in the sky in definite(一定的) paths.

　　We know that every little bit of matter in the universe pulls upon every other bit of matter. There exists(存在) a pull between the earth and the moon, which keeps the moon travelling in its orbit(轨道) around our planet, the earth. The gravity(重力) holds you to its surface, and pulls back to it the ball which you throw into the air. Of course the ball also pulls on the larger earth, but the earth is so much larger that the pull is not noticed.

　　Now remember that large bodies exert (施加) a greater pull on any body than smaller ones which contain(含有) less material (原料，材料). But each object in the universe, no matter how small, pulls on all other objects to some degree(某种程度).

1．According to the passage, there are ________ fellow members besides the earth in the sun's family.

[　　]

2．Which of the following statements is TRUE?

[　　]

A．The earth is farther from the sun than any of the other eight planets.

B．Two of the planets are farther from the sun than the earth.

C．Six of the planets are closer to the sun than the earth.

D．The earth is the third nearest planet to the sun.

3．What holds the nine planets in their paths?

[　　]

4．Why the moon travels around the earth is ________ .

[　　]

A．that the sun pulls upon the moon

B．that the earth pulls upon the moon

C．that the earth and the moon pull upon each other

D．that the other eight planets pull upon the moon

5．In the last paragraph the writer tell us ________ .

[　　]

A．each object in the universe pulls upon all the others more or less

B．a large body pulls on a small one less than a small body pulls on a large one

C．a small body does not pull on a large one

D．the pull between two bodies is always equal(相等)

仔细阅读下面的短文并按要求完成后面的小题。

     Men have always wondered about the earth they live on and about the ①_____ 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.

       ②他们也思考地球的形状。 Most early people believed the earth was flat.

       ③In 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. ④With 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 (重力) was and people at last understood why they did not fall off the earth.

76.   在文中①处填写一个单词，使得句意完整、上下文通顺。___________________

77. 根据文章内容回答问题。

What questions did early men ask themselves when they looked at the night sky? Write down one of them.

_________________________________________________________________________ 

78. 将文中②句翻译成英语。

       _________________________________________________________________________ 

79. 将文中③句翻译成汉语。

       _________________________________________________________________________ 

80. 写出文中④句的同义句，每空限填一词。

       Galileo’s telescope made ________ __________ for people to see the sky more clearly, and to find the positions of the stars and planets.