[求助]OG-48，谢谢！

顾风

研究者是基于什么假设做出结论的。

看A：高immune能防止xx

看C：高immune的人不会得XX

假如是基于这两条做出结论的，那就是循环论证。换句话讲：

即 因为B是对的，所以B是对的

这个逻辑是错的。

A和C更应该说是结果，因为只有通过测试才知道高immune是不是有这个功能。

jinzl

我好象明白楼上的意思了，Ａ和Ｃ本身就是结论的引申，不是结论的假设，是这样的意思吗？

但ＯＧ的解释又是什么意思呢？

Normal immune-system activity could protect against mental illness without high-immune system activity offering increased protection or prevention, contrary to what A and C state, so neither of A and C is assumed.

请牛牛帮忙解释，实在看不懂ＯＧ的解释，谢谢！

顾风

这段话的意思是：　并不需要高免疫系统提供更多的保护与预防，普通的免疫系统就能够防止精神疾病了。所以A和C不是assumed的。

jinzl

我好象有点明白楼上的意思了：

结论：普通的免疫系统就能够防止精神疾病

Ａ／Ｃ：高immune能防止xx／高immune的人不会得XX是结论的推论，不是结论的假设，是这样的意思吗？

就是：结论－＞Ａ／Ｃ

提干要求的是：求假设－＞结论

所以Ａ／Ｃ错，是这样的意思吗？

[此贴子已经被作者于2006-4-10 9:04:27编辑过]

jinzl

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顾风

基本上是这样，题目问的是要推出结论，还需要什么假设

gonghao

以下是引用jinzl在2006-3-14 16:19:00的发言：

48. 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
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. Psychological treatment of mental illness is not as effective as is medical treatment.

我已明白Ｄ是ASSUMPTION，但请问Ａ和Ｃ有什么问题？

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

immune-system 高，mental health高

A取非：immune-system 高，mental health低，weaken结论

C. People with high immune-system activity cannot develop mental illness.

C取非：immune-system 高，mental illness高，weaken结论

请大牛帮忙！谢谢！

A：错误 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.

文章中只说normal和high比lower要好，但是normal和high之间用的是“or”并列关系吧，所以A针对high和naormal的讨论有问题。就算high比normal好，也不影响high和normal比lower要好。所以不选A

C：说high不会导致mental疾病,high会导致健康评分高，发现健康评分高，精神评分高，文章是说lower 免疫力，导致lower 分数，推出精神分数低。从头到位没说，high不会导致疾病。C是太过极端的选项，肯定不选

jinzl

非常感谢gonghao．我已经明白了楼上的思路了，Ａ／Ｃ之所以错，因为原文的论据是基于low levels of immune-system activity导致 mental health 低 ，并不是normal和high之间的比较（所以Ａ错），也不是high不会导致mental疾病（所以Ｃ错）

但ＯＧ的解释是这样的

Normal immune-system activity could protect against mental illness without high-immune system activity offering increased protection or prevention, contrary to what A and C state

非常感谢顾风的翻译：并不需要高免疫系统提供更多的保护与预防，普通的免疫系统就能够防止精神疾病了

但请问这段话怎么contrary to what A and C state？

jinzl

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jinzl

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