Progress in science and the improvement of living conditions have led to (导致)the rapid growth of the world population. Modern medicine , for example , has made it possible for babies to grow up healthily and for people to live longer. With improved living conditions, especially in the countryside , people all would like to have larger families. As a result, the world population has increased so rapidly that it has now passed 6 billion.

                 

  But the overgrowth (过度增长)of population puts threat to the human society. A large population needs much food and living room. So, in the long run, the growth of the world population will only do harm to the human society.


根据短文内容,选择正确答案。

(   ) 1. What's the population of the world in 1900?

    A. 1 billion. B. 1.2 billion.

      C. 1.6 billion. D.2 billion.

(   ) 2. How many times larger is the population in 1999 than that in 1930?
        A. Twice. B. Three    times.

      C. Four    times. D. Five    times.

(   ) 3. Which is NOT the reason for the growth of the world population?

A.Progress in science.

B.The improvement of living condi-tions.

C.Modern medicine.

D.One-child policy.

(   ) 4. The underlined word in the last para- graph means " "-

A.创造 B.威胁

C损耗 D.受益

(   ) 5. What can we learn from the passage?

A.China has a large population.

B.The population in developing countries is growing faster.

C.The countries all over the world have controlled the increase of population.

D.The population is growing fast, so we have to control the population.

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