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A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity.The researcher concluded from this experiment that the immune system protects against mental illness as well as against physical disease.

The researcher's conclusion depends on which of the following assumptions?

正确答案: D

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assumption题疑惑中。。求大神帮忙解答!谢谢!

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楼主
发表于 2013-3-1 11:17:39 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
7. A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protects against mental illness as well as
against physical disease. The researcher’s conclusion depends on which of the following assumptions?
(A) High immune-system activity protects against mental illness better than normal immunesystem
activity does.
(B) Mental illness is similar to physical disease in its effects on body systems.
(C) People with high immune-system activity cannot develop mental illness.
(D) Mental illness does not cause people’s immunesystem activity to decrease.
(E) Psychological treatment of mental illness is not as effective as is medical treatment.
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沙发
 楼主| 发表于 2013-3-1 11:21:41 | 只看该作者
assumption题不是选项取非使原结论不成立么?此题答案D,我认为取非恰好使原文结论成立啊。。。不理解。。
板凳
发表于 2013-3-1 23:36:39 | 只看该作者
其实我选的时候也没选出来,但是看了答案以后感觉是这样的:
这道题应该是谁因谁果的问题,题干的结论是 免疫力好是因  脑子没病是果

另外一种可能是: 脑子有没有病是因 ,免疫力好不好是果,
再具体一点说:如果脑子有病的人会导致免疫力下降,测试的结果就会发现免疫力不好的人 脑子都不太好使,而免疫力好的人脑子比较好使。

所以要支持结论,要先排除 “脑子有病导致免疫力下降” 的这种因果关系。


其实og上有道题跟这个原理很像
题干是“人们发现以前造的房子跟现在造的比,质量要好,因此推测出以前的工人技术更好,更仔细”  这道题好像是要求weaken
答案是:因为只有质量好的房子才被留下来,其他都倒塌了或者坏掉了。(所以留下的房子都是质量好的房子)

所以这种因果关系有个缺陷是,到底谁是因,谁是果。

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