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___________ Which of the following most logically completes the argument? 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 错选了C，答案给的A。A说女士比男士更可能做志愿活动，女士比男士活得长。这不是支持原文了么？可以题目不是应该驳斥吗？

请问这道题的解题思路

老师 这题解题思路是？

老师好，请教下这道题的做题思路

根据题意得到r=p/1.25（100-p）+p 最后化简为r=4p/500-p，如何得到400p/500-p呢

请问王文静老师 这题c选项不应该是用deep吗

请问王文静老师 这道题c为什么排除呢

王文静老师还是这道题 我看了您的解释说e选项因为是跟小说比所以错，我理解是跟PKD那个人比啊？

谢谢金老师～

提问唐瑭老师324和325两道题，其中325我选的A，因为考虑到B是从句，违反简洁性原则，这道题为何选B？

王文静老师可以讲下这道题E选项怎么排除吗