A researchr 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 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 mental 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 is medical treatment.
答案是D,百思不得其解。
否定了因果倒置的可能，文章说是因为people's immune-system低，所以测试结果mental health分数低（就是可能有mental illness）
D说不是因为有mental illness而导致people's immune-system低的，既排除了可以削弱结论的因果倒置
请楼主在标题里面给出题目出处，方便大家回帖，方便后人查询，谢谢啊
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