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aary431 · 发表于 2010-5-13 14:10:14

People often recall having felt chilled before the onset of a cold. This supports the hypothesis that cold are, at least sometimes, caused by becoming chilled; it is the chill that allows a rhino virus, if present, to infect a person.
Which of the following, if true, most seriouly weaken the force of the evidence cited above?
B. After a rhino virus has incubated in a person for several days, the first symptom it causes is a feeling os chillness.
C.People who are tired and then because chilled are more likely to catch severe colds than are people who are chilled without being tired.
E.Rhino viruses are not always present in the enviroment, and so a person could become chilled without catching a cold.

答案是B，那为什么C不可以？（强问）E呢？（弱问）
谢谢~NN们

葛佳 · 发表于 2010-5-13 15:10:30

偶的愚见
C.tired.与题目无关。
E.Rhino viruses are not always present in the enviroment
题目结论的意思是：使犀牛病毒，如果存在，感染人。
削弱的话是【即使存在也不感染人】
E加强

请牛牛指教

aary431 · 发表于 2010-5-13 15:15:54

嗯，但是tired 为什么不是他因呢？

双鱼游 · 发表于 2010-9-3 17:08:21

推理：人们经常回忆起感冒前都会有chill冷的感觉。
结论：感冒是由chill 引起的，chill 使得病毒感染人.即 chill-----》virus----》cold
WEAKEN: virus 潜伏在人体数多天后，第一症状就是chill，也就是，virus-----》chill ，从而推翻了结论
C选项引出了tired 无关概念，E选项我也有点迷糊，chill 不一定得cold，按说应该各段结论的推理链了啊，咋就不对呢，恳请大牛出山帮忙回答一下

Cecile8chen · 发表于 2012-10-16 18:09:57

同问为什么tired不可作他因解释

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