阅读理解:阅读短文,然后根据内容选择最佳答案。

  If a man in a spaceship looked down at the Earth, he would see mainly water.He might think that the Earth was one giant ocean with little land.

  Nearly seven-tenths of the Earth's surface is covered by water.One ocean, the Pacific(太平洋), has an area of 63 million square miles.

  Many years ago people thought that the land under all this water was flat.Now they know that this is not true.There are as many mountains under the sea sa there are on the land.

  At first, there was very little salt in the sea.The salt was brought into the sea by rivers.It is possible to measure the age of the earth by measuring the amount of salt in the sea.Scientists can calculate how many years it took for this amount of salt to be carried from the land into the sea.

(1)

Nearly ________ of the Earth's surface is covered by water.

[  ]

A.

seven-tenths

B.

three-tenths

C.

seven-tenth

D.

three-tenth

(2)

Long time ago people thought that the land under the sea was ________.

[  ]

A.

mountains

B.

a ball of gas

C.

full of coal

D.

flat

(3)

In fact, under the sea the land ________.

[  ]

A.

is full of mountains

B.

is almost flat

C.

is full of coal

D.

is a ball of gas

(4)

At first, there was ________.

[  ]

A.

a little salt in the sea

B.

much salt in the sea

C.

little salt in the sea

D.

no salt in the sea

(5)

We can know the age of the Earth by measuring ________.

[  ]

A.

the amount of water in the sea

B.

the amount of flat in the sea

C.

the amount of mountains in the sea

D.

the amount of salt in the sea

完形填空。
     Mr Johnson worked in a  1  .Three years ago,when he was sixty-eight, heretired (退休).But a lot
of people come to ask hem   2  .He's vevy  3   in the daytime and he wants to have a good rest at night.
Half a year ago a young man moved in the room upstaivs.At first he was   4   but later. he and his friends
talked loudly,sang and danced until it was late at night.Mr Johnson was  5 ,but he didn't say anything.
It was the young man's birthday yesterday. 6  friends came at seven in the evening,The drank  7    and
made a lot of noise.The olk man couldn't fal asleep the whole night.This moning,as soon sa he got up,
he went   8  
      And began to knock at the door.The young man opened the door and let the old man go in."Did
you hear me  9  the ceiling(天花板)last night,young man?"asked Mr Johnson.
     " 10 , sir,"said the young man."I don't mind it.it was very noisy in my house, too."
(     )1. A. factory        
(     )2. A. look them over  
(     )3. A. basy            
(     )4. A. friendly        
(     )5. A. thirsty        
(     )6. A. The whole      
(     )7. A. too much        
(     )8. A. to upstairs    
(     )9. A. beat            
(     )10. A. That's right  
B. school              
B. look over          
B. free                
B. quiet              
B. tired              
B. His whole          
B. very much          
B. upstairs            
B. to beat            
B. Don't do that again
C. hospital          
C. to look them over
C. ill              
C. helpful          
C. pleased          
C. His all          
C. much too          
C. to downstairs    
C. was beating      
C. Don't worry      
D. shop                  
D. to look over them      
D. happy                  
D. careful                
D. unhappy                
D. All his                
D. a lot of              
D. downstairs            
D. beated                
D. It doesn't matter    

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