Which of the following most logically completes the argument?
When people engage in activities that help others, their brain releases endorphins, the brain’s natural opiates, which induce in people a feeling of well-being.It has been suggested that regular release of endorphins increases people’s longevity, and a statistic on adults who regularly engage in volunteer work helping others shows that they live longer, on average, than adults who do not volunteer.However, that statistic would be what we would expect even if volunteering does not boost longevity, because __________.
A. in the communities studied, women were much more likely to do regular volunteer work than men were, and women tend to live longer than men do
B. the number of young adults who do regular volunteer work is on the increase
C. the feelings of well-being induced by endorphins can, at least for a time, mask the symptoms of various conditions and diseases, provided the symptoms are mild
D. it is rare for a person to keep up a regular schedule of volunteer work throughout his or her life
E. some people find that keeping a commitment to do regular volunteer work becomes a source of stress in their lives
答案是A。我分析答案，觉得是不是A列出了另一个事实来说明问题呢？但是这句“However, that statistic would be what we would expect even if volunteering does not boost longevity”是一个转折啊，应该是削弱了上面所说的内容，A答案怎么感觉木有这个意思？？？求解释！作者: Xiaotongdi 时间: 2011-10-17 20:58
牛牛们，帮帮忙！作者: Xiaotongdi 时间: 2011-10-17 22:59
恩恩，那就是说A其实是提供了另一个证据！作者: andert 时间: 2011-10-19 10:08
我是这么理解的 people包括了 男+女 "that statistic would be what we would expect even if volunteering does not boost longevity“ 再看这里 in the communities studied, women were （much more likely to do regular volunteer work than men were,） and （women tend to live longer than men do） 这两个是平行，然而却并不代表着其中需要存在必然的联系