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单选题 综合类
2016-02-01

Ababy boy live to be about 73, a baby girl, about 79, this has __________

A.has impact on
B.a wide gap
C.a longer life
D.animal species
E.different societies
F.heart disease and alcoholism

参考答案

B

答案解析

女孩比男孩活的寿命长,他们之问存在很大差距,在原文第一段可以找到答案。

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