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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 reseacher 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 systems.
C. People with high immune-system activity cannot develop mental illness.
D. Mental illness does not cause people's immune-system activity to decrease.
E. Psycological treatment of mental illness is not as effective as is medical treatment.
这道题是第二版OG(verbal)第七题。
我选了B,因为我的理解是材料中结论说免疫系统对防止神经疾病和防止物理疾病有同等疗效,而实验只说明神经健康和免疫系统的关系,所以需要假设神经疾病和物理疾病病理相似,免疫系统才可两者都防止,请问大牛这样的理解错在何处??
参考答案给的是D,给的解释是说the reseacher asserts that immune-system activity can inhibit mental illness as it does physical illness. While it is possible that mental illness might itself depress immune-system activity, the reseacher assumes that this is not the case. If mental illness caused a decline in immune-system activity, then lower levels of immune-system activity would be expected as a result, and the higher levels would merely indicate the absence of illness rather than any effect on illness.
表示我虽然能理解答案给的解释,但是为何我的想法不对,跪求大牛解答!!
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