标题: 弱弱得 问道CR 、 [打印本页] 作者: aary431 时间: 2010-5-13 14:10 标题: 弱弱得 问道CR 、 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 作者: 葛佳 时间: 2010-5-13 15:10
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
