Passage Three [br] Why is the reproductive collapse particularly worrying?Becaus

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问题 Passage Three [br] Why is the reproductive collapse particularly worrying?

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答案 Because it comes along with an increase in life expectancy．

解析由题干关键词定位到第二段，该段首句指出，这种出生人口的骤减尤其令人担忧，因为它与平均寿命的延长相伴随。所以答案为Because it comes along with an increase in life expectancy。

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