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.、
the question asks you to seek an ASSUMPTION "because ...". assumption is unstated premise. moreover, this is a causal reasoning. Therefore, you should find a premise best suit the effect. Let's analyse the Effect step by step. "that statistic would be what we would expect even if volunteering does not boost longevity" is in subjunctive mood.CONDITION is "volunteering does not boost longevity". RESULT is "statistic would be what we would expect". I think the key is to distinguish between " the statistic" and " what we would expect" "the statistic" is "adults who regularly engage in volunteer work helping others shows that they live longer, on average, than adults who do not volunteer" "what we would expect" is the conclusion draw from "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". Thus, the conclusion is the same as the result of the statistic. "people engage in activities that help others live longer" We can think the Effect as a whole. " people engage in activities that help others live longer"
The best way to understand the Effect is seeing the main point of the subjunctive mood as modifying " what we would expect"
Answer A suits the best.
B has nothing to do with what is discussed. C,D,E Out of the scope.
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发表于 2011-3-11 09:02:27
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