请大牛斧正：Prep-112答案是否错了，O(∩_∩)O谢谢！！！

southnorth

表因果有什么不可以呢？

jbyupei

当我们判断 “A导致B”是否真时，  有这么三种情况， 一种加强，两种削弱

A 确实导致 B   加强

B 导致 A       削弱

C 导致B 且 C 导致 A   削弱

A选项正说的是第三种 

jbyupei

顶一下 10楼的，  说的挺好

蚊子漫步

刚才翻到国外论坛的解释，此题相当于weaken，即削弱volunteering导致长寿。

in any passage that takes CORRELATION and concludes CAUSATION, that connection can be destroyed if either:
(a) the causation actually runs the other way around (i.e., the passage concludes that X causes Y, but in actuality Y causes X);
(b) the two correlated things are both results of some third, not considered, confounding factor.
选项C： the sex of the volunteers is the "third, not considered, thing" that destroys the hypothesis of causal connection between volunteerism and long life.

这个解释我觉得比较合理，大家看下

Ank

However, that statistic would be what we would expect even if volunteering does not boost longevity, because __________.

为什么相当于削弱？
它不是问说即使志愿者行为没有导致寿命更长，这个统计调查也应该是我们预计的样子，因为------
是这么翻译么？

sophiacoming

However, that statistic would be what we would expect even if volunteering does not boost longevity, because __________.

即使志愿者行为没有导致寿命更长，统计结果（they live longer, on average, than adults who do not volunteer）不变，因为_＿＿＿＿＿＿＿。

即为对志愿者寿命更长找个新理由——> 否定原文的因果关系，找他因——>weaken