According to the speaker what should we do to prevent a population explosion?A.To take ac

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According to the speaker, what should we do to prevent a population explosion?

A.To take actions or assist the poorer countries to do so.

B.To bear less children generation by generation.

C.To develop the system of welfare greatly.

D.To let poor countries learn from rich countries.

请帮忙给出正确答案和分析,谢谢!

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