2. 外语
  3. Why do women live longer than men? ______ Male’s heart power to pump blood around the body could have decreased by ______of its

Why do women live longer than men? ______ Male’s heart power to pump blood around the body could have decreased by ______of its

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问题 Why do women live longer than men? ______
Male’s heart power to pump blood around the body could have decreased by ______of its youthful strength.
选项 A、1/2
B、2010-1-3
C、2010-1-4
D、2010-1-5
答案C
解析 由文中第二段的最后一句话“The average male heart becomes weaker with age, and by the age of 70 its power to pump blood around the body could have decreased by up to a quarter of its youthful strength”可知，男性心脏的力量在70岁时比年轻时降低a quarter，即“四分之一”。因此C选项为正确答案。
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