题目内容

补全对话:选择方框内适当的选项填入短文空白处(有一项是多余的)。
A: What are you doing?
B:   1   
A: Great! Can you tell me something about the book?  
B: Certainly! It says 1,000 years ago, the world's population was very small.  2   
A: Really?
B: Yes, but during the last three or four hundred years, the world's population has grown very quickly.
Today, it is growing faster than ever before.  3   
A: Sorry, I don't know.
B: It's more than 6 billion.
A: It's so big.  4   
B: Yes. If we don't control the population, there will not be enough space even to stand in on the earth in
600 years.
A:   5   
A. Do you know what the world's population today is?
B. I'm reading a book about the world's population.
C. What's the population?
D. It's too terrible.
E. It's no more than 2 billion.
F. I think we must do something to control the population.
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