求助：GWD-TN-17 第31题

sue0354

31. GWD26-Q31

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，完全不知道为什么A为什么可以作为because呢？？？

MyrticeTAN

唔……我也刚做完这套，当时也是纠结了好久终于选了A

确实这个要作为because，一眼看上去怎么都不像，觉得women tend to live longer than men do这个只是假设……还特意去看题干有没有“if true”这种字眼……

我是这么理解的，A的women tend to live longer than men do就是一个事实，看选项时把它当一个事实来接受。那么，如果做志愿者的大多是女的，同时女的要比男的活得久，那么不用做调查也可以知道，做志愿者的活得久这个结论……相当于A={女的}，B={志愿者}，B集合绝大部分落在了A集合里面……

希望说清楚了……

sue0354

嗯，有点儿想通了~
A选项首先说in the community studies， 应该就是要我们当做事实来理解~

O(∩_∩)O谢谢

darkforever

我说几句废话补充一下，呵呵，原文的初衷就是问，志愿者人群寿命长如果不是因为志愿行为本身，那么是什么因素，所以在不看选项的时候首先能够确定，正确选项应该是第一局限在志愿者人群内，第二是与延长寿命有关的原因，由于题目中说，就算没有测试，也能推断出那个结论，所以长寿原因也就是正确答案必然与测试无关，再看选项，符合上述的只有A