题目内容：
1. The underlined word “longevity” in the second paragraph probably refers to “________”.A. health
B. long life
C. ageing
D. effect
2. The text mainly talks about ________.
A. men’s heart cells
B. women’s ageing process、
C. the gender difference
D. hearts and long life
3. According to the text, the UK scientists have known that ________.
A. women have more cells than men when they are born
B. women can replace the cells that enable the heart to beat
C. the female heart loses few of the cells with age
D. women never lose their pumping power with age
4. If you want to live longer, you should ________.
A. enable your heart to beat much faster
B. find out the reason for ageing
C. exercise regularly to keep your heart healthy
D. prevent your cells from being lost
5. We can know from the passage that ________.
A. the reason why ageing takes a greater loss on the male heart has been found out
B. scientists are on the way to finding out why the male heart loses more of the cells
C. the team has done something to prevent the male from suffering the greater loss
D. women over 70 could lose more heart cells than those at the age of 20
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