请教两道GWD——第一道的答案是不是错了？

青色石头

GWD26-Q31

Which of the following most logically completes the argument?

When people engage in activities that help others, their brainreleases 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 involunteer 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 womentend to live longer than men do.
B. the number of young adults who doregular 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 conditionsand diseases, provided the symptoms are mild.
D. it is rare for a person to keep up aregular schedule of volunteer work throughout his or her life.
E. Some people find that keeping acommitment to do regular volunteer work becomes a source of stress in theirlives.

答案是A。但是我记得以前是OG还是蓝皮书上曾经讲过这道题（虽然今天乱翻一气没找到），当时老师还特别强调了为什么会选C。而且照这个原文的行文看我也觉得该选C，因为前面一句说“就算不能长寿它也是有利的，因为……”，所以觉得后面一句应该讲长寿以外的，而不是A那样讲男女长寿差别。敬请高人指点迷津！

GWD17-Q9: （CD-9Q10）

Press Secretary:  Ourcritics claim that the President’s recent highway project cancellationsdemonstrate a vindictive desire to punish legislative districts controlled byopposition parties.  They offer asevidence the fact that 90 percent of the projects canceled were in suchdistricts.  But all of the canceledprojects had been identified as wasteful in a report written by respectednonpartisan auditors.  So the President’schoice was clearly motivated by sound budgetary policy, not partisan politics.

Which of the following is an assumption on which the presssecretary’s argument depends?

A. Canceling highway projects was notthe only way for the President to punish legislative districts controlled byopposition parties.

B.  The scheduled highway projects identified as wasteful in the report were not mostly projects in districtscontrolled by the President’s party.

C. The number of projects canceled wasa significant proportion of all the highway projects that were to be undertakenby the government in the near future.

D. The highway projects canceled indistricts controlled by the President’s party were not generally more expensivethan the projects canceled in districts controlled by opposition parties.

E.  Reports by nonpartisan auditors arenot generally regarded by the opposition parties as a source of objectiveassessments of government projects.

这个题的答案是B，我之前做的是A，脑子有点儿没转过弯还是没太想明白，请大牛指教！

非常感谢！！

我心向明月

GWD26-Q31，我的意见是选A，讨论参见：
http://forum.chasedream.com/GMAT_CR/thread-141686-1-1.html  （6楼，7楼）

GWD17-Q9，参见：
http://forum.chasedream.com/GMAT_CR/thread-396295-1-1.html

青色石头

谢谢楼上的大人，不过今天刚刚问了上新东方时的逻辑老师，他回复说确定选C～～～～～

我心向明月

谢谢确认，今天主攻语法，明天学习一下这题。