GWD26-31汗。。。答案？？？

chrishan31

Women à live longer

Doing voluntarily work à lived longer

 

Both variables will yield the same effect. Therefore, “that statistic would be what we would expect even if volunteering does not boost longevity, because (A) – women live longer.

 

In an experiment, this is called “Confounding variables” meaning two independent variables will yield the same affect to the dependent variable.

 

I hope this help explain why (A) is a better answer than (C)

xiaofan1016

以下是引用TonyGe在2009/9/20 21:05:00的发言：
A is right. 帮助别人和长寿是女人的本性，统计结果一致，但不具普遍性，是出题的本意。但A 的表达有问题，题源的错误。

的确这句话

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.  

问题是  即使volunteering 不能延长寿命，调查结果依然会象我们预期的那样

女人本来就比男人长寿（这是个事实），女人比男人更多的做义工，所以被调查的做义工的人中女人较多，调查结果自然就表明了做义工更容易长寿了，和volunteering本身没关

                

applehao

做这道题的时候看了几遍选项,觉得没有一个是对的，最后勉强选了C但觉得很不舒服很不妥当。对答案的时候看到是A，当时不能理解就copy到逻辑错题集里highlight出来。今天终于茅塞顿开，原来我的思维进了一个大大的误区。

 

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.
                    

 

把”女人比男人更可能去做义工“放在前面，很容易混淆思路，令人感觉women tend to live longer than men do是women were much likely to do regular volunteer work"的结果。既然文章已经说了even if volunteering does not boost longevity，这里又说做女人义工导致长寿，想当然就当作错误选项排除掉了。不知这样表达是题目本身的不完善还是出题人故意挖坑。总之要小心小心再小心。

 

当然现在回过头看就觉得很清楚了。

 

文章内容“a statistic on adults who regularly engage in volunteer work”加A选项内容“in the communities studied, women were much more likely to do regular volunteer work than men were”，可以推出，a majority f those who regularly engage in volunteer work are women，而女性本身就比男性长寿是common sense，则可以得出结论，即便做volunteer work不能导致长寿统计结果也会和预期的一样。因此A选项显然正确。

 

 

amberdeng

CR做多了容易走火入魔

woliger

现在体会到了lawyer的强大

Mandyvic

IMO: C

akiluk

题目之前说 a statistic on adults who regularly engage in volunteer work helping others shows that they live longer,

然后问：就算志愿者不是长寿的原因 数据也应该和之前得出的一样（即志愿者的寿命比较长）A中就是这个意思，只不过很迷惑我们就是了~ 太狡猾了！

hustwebweb

楼上的是正解啊！
先确定statistic是什么？就是这些志愿者寿命更长！
问题是说，如果不是原因.......造成的寿命更长，statistic也是正确的，为什么呢？
A选项说明了原因！