大全-14-16的思路

dandan74

Roland: The alarming fact is that 90 percent of the people in this country now report that they know someone who is unemployed.
Sharon: But a normal, moderate level of unemployment is 5 percent, with 1 out of 20 workers unemployed. So at any given time if a person knows approximately 50 workers, 1 or more will very likely be unemployed.

16. Sharon’s argument relies on the assumption that
(A) normal levels of unemployment are rarely exceeded
(B) unemployment is not normally concentrated in geographically isolated segments of the population
(C) the number of people who each know someone who is unemployed is always higher than 90% of the population
(D) Roland is not consciously distorting the statistics he presents
(E) knowledge that a personal acquaintance is unemployed generates more fear of losing one’s job than does knowledge of unemployment statistics

此题有前辈解释过，但我还是不能完全相同，那位高人给里里思路，如果在考试的场合应该如何很快的找到答案。

dorbear

如果按照取反找假设的话，（B）是非常明显的答案。如果按照类型来分，这是一个论据有效型假设，即论据是一个整体概念，只有在平均分布的情况下才适用于每个局部。不知道你的理解怎样？

dandan74

我在做这道题的时候，把B这个选项当无关选项排除了。看来我对这种整体局部的题不是很敏感。你这莫一说，觉得很有道理。看来这道题也属于集合或数字为题。另外，向请教一下，我现再做题全靠感觉，总是不能向各位一样，很快看出premise和conclusion，滤清思路，这是不是就是我无法在提高的瓶颈阿。另外，考试的时候能有时间仔细分析思路吗？
多谢了！！

PhoebeOMG

B实在支持S的最后一句：她说人认识50个就会有1个失业。
如果，失业人群都是集中在一个地方，就可能一个人认识50 个人，会有多余一个人，或则很多人是失业的啦