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？

王文静老师，我这道题目选了E，因为读起来感觉：a third of them作为elephants的修饰语，有一个with比较顺口也比较符合一般修饰语的语法，能麻烦您解释一下吗

问王文静老师，结合未画线部分C答案相当于用and并列了两个That从句修饰robe，且句子结构，动词时态也没有什么错误，代词they也有明确的指代，请问老师是哪里有问题？

老师请问一下，A答案为什么错？estimated 用来修饰fragments，A和D的区别就是介词 at 和 to 的区别 固定搭配？查了例句 estimate at 是正确的使用 被估计在 。。几百万年以前这个语意放在此句里 我感觉是合理的。

请问一下老师，关于这道题，我是根据 either ..or..绝对的平行做对的，但是在and并列的两个谓语 date 和 were fashioned的这个部分有点困惑。为什么不是date and are fashioned 或者说 dated and were fashioned。我认为这里是在讲述一个客观事实：这个神像可以追朔到什么时期和由什么制成，应该是用一般现在时。were fashioed 是过去式的被动语态对吧？date and were fashioned感觉也不复合并列的要求。

问MAY老师，两个“项目”的会用TT图解决，请问MAY老师像这种三个“项目”的题应该怎么解决？

问MAY老师 我用TT图解决不了这个问题，麻烦老师帮我看一下是哪里出了问题。

May老师，这是博智模考题里面的一道数学题，不理解呢

May老师你好，这道题的第三小题我的解题思路是插空法，但是做出来答案不对，请老师找找我的问题。因为题目说两端不能有女生，那我就让3个女生插在男生当中，5个男生6个空位，但要去掉一头一尾两个空位，就是C4选3*A33*A55（剩下5个男生随便排），请问老师我的思路上哪里错了？

麻烦老师帮我看看我哪里做错了

阴影区的这句话，中间的那个gives，是跟着前面哪个词的? 是哪个词发出的gives动作? 谢谢