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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 was no more than 250 million. F. I think we must do something to control the population. G. There are too many people on the earth. |
A: What are you doing?
B:
A: Can you tell me something about the book?
B: Certainly! It says about 1, 000 years ago, the world's population was very small.
A: Really?
B: Yes, but during the last three or four hundred years, the world's population has grown very quickly.
A: Sorry, I don't know.
B: It's more than 7 billion.
A: It's so large.
B: Yes. If we don't control the population, there will not be enough space to live in.
A:
