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？

2

as, since和when的用法区别

看不懂，错选C

正确选项E取非怎么理解（我后来直接加强倒是想懂了）

如何解这两道题呢？

What is the median number of employees assigned per project for the projects at Company Z? 1, 25 percent of the projects at Company Z have 4 or more employees assigned to each project. 2,35 percent of the projects at Companny Z have 2 or fewer employees assigned to each project.

18！能被6整出，但不能被6的N+1次方整除，问n是多少？ 解释说求的18！有8个6的因子，哪八个阿？

原文我读到：不诚实就难达成政治compromise，结论是不诚实可以说明运作良好。 最后我剩下了A和C两个选项，A的意思是“达成Compromise不一定说明运作良好”；C的意思是“选民有其他判断标准”。 当时我的反应是“C中说到选民，跟原文意思关系较近”。 想听听老师的解题思路，以及我思路的问题。 谢谢老师。

原文 我是这么理解的 想让我解释为什么水藻擅长在慢流速水生长但是却在极度干旱的情况下（非常慢的水流速） 死翘翘 。 我觉得ABCDE 都无法解释 这个现象。。 D选项在说 什么在澳大利亚会经历一个完全的干旱然后又恢复。我感觉跟没说一样啊。 不知道是如何解释原文的 还希望老师解答 ^.^