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？

想要请教一下陆旭老师用您的方法怎么解这道题？谢谢！

这里的from，换成below跟above的话，要怎么理解？网课上说的不太清楚，可以再详细说一下吗？

麻烦老师详细分析下ABC选项，以及为什么要用corresponding，谢谢

这个题我一开始选的E，做题的时候完全摸不到头绪，感觉每个选项都不太好，麻烦老师详细分析下每个选项，谢谢

DE有哪些错误

这道题选A，但我觉得光是A没办法确定，求老师讲解，谢谢！

这道题我总觉得两个单独都可以，但答案选B，求老师梳理一下，谢谢！

请问这里的factor是根的意思吗？只凭A的话应该只能确定x和k都是根吧，是怎么确定x-k也是根的呢？

请问老师这个怎么只凭A就能算出来呀？

想要请教一下老师这道题怎么写？