请教，CXD

doudouzhu · 发表于 2010-2-25 01:33:37

P33. 20
A research discoverred 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 reasercher's conclusion depends on which of the following assumptions?

A. High immune-system activity protects against mental illness better than normal immune-system activity does.

B. Mental illness is similar to physical disease in its effects on body system.

C.people with high immune-system activity cannot develp menal illness.

D. Mental illness does not cause people's immune-system activity to decrease.

E. Psychological treatment of mental illness is not as effective as its medical treatment.

正确答案是D。

我的问题是，既然在最后的结论中提到了physical disease, 而且这个在文中没有提到，为什么不是选B，把physical diease 与文中提到的mental illness 连起来呢？

谢谢大家！

请教，CXD

所属分类: GMAT考试

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