摘要： D 主旨大意题.根据文章第 1 段的第 2 句 -the reason could be that men’s hearts go into rapid decline when they reach middle age 和第 2 段中的 women’s longevity may be linked to the fact that their hearts do not lose their pumping power with age 及全文内容可知.本题的正确答案选 D.

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