[填空题]Russian men live 14 years shorter than Russian women and 16 years shorter than Western Europe men.

[填空题]Russian men live 14 years shorter than Russian women and 16 years shorter than Western Europe men.

[单项选择] That question "why women live longer than men" can be answered at two levels. An evolutionary biologist would tell you that it is because women get evolutionary bonus points from living long enough to help bring up the grandchildren. Men, by contrast, wear themselves out competing for the right to procreate in the first place. That is probably true, but not much help to the medical profession. However, a group of researchers at John Moores University has just come up with a medically useful answer. It is that while 70-year-old men have the hearts of 70-year-olds, those of their female peers resemble the hearts of 20-year-olds. David Goldspink and his colleagues looked at 250 volunteers aged between 18 and 80 over two years. All the volunteers were healthy but physically inactive. The team’’s principal finding was that the power of the male heart falls by 20-25% between the ages of 18 and 70, while that of the female heart remains undiminished. They found that between the age
A. women have to live long enough to look after grandchildren
B. women’’s hearts hardly grow old
C. women have more endurance than men
D. women are superior at evolutionary scale

[单项选择]A. Women live longer than men.
B. The population of woman is smaller than man’s.
C. The research and medical practice often ignore sex.
D. The disease Parkinson’s is more likely to strike women.

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