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 one out of 20 workers unemployed.
So at any given time if a person knows approximately 50 workers, one or more will very likely be unemployed.
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 percent of
the population
(D) Roland is not consciously distorting the statistics he presents
(E) knowledge that a personal acquaintance is unemployed
答案是B
Roland hints that the unemployment rate is high since 90% people know someone is unemployed.
Sharon disagrees and claims it is normal for 90% people to know someone who is umemployed at a normal umemployment of 5%.
For necessary assumption questions, just use negation and see if that would cause the arugment to cumble. If so, that answer choice is correct. You do not need to worry why other choices are not assumptions other than that these wrong choices have no impact on the argument.作者: jerryjay 时间: 2012-10-30 06:27
"概率的前提就是平均分布,如果不平均分布,概率无意义。 "
That is useful!作者: purpleelf 时间: 2012-11-2 06:35
“For necessary assumption questions, just use negation and see if that would cause the arugment to cumble. If so, that answer choice is correct. You do not need to worry why other choices are not assumptions other than that these wrong choices have no impact on the argument.”——That's a useful method to me!Thanks a lot!作者: felixroman 时间: 2012-11-5 06:33
做题顺序:
1.看题 问S的观点
2.回顾文章 两相比较 一定是相反。特别是 s: 中 but so any 三个观点的提示。故而r观点可略过。
知道了 失业率和人群调查的非强烈相关性。找到结论
3。看选项 先看not 先B 后D
B 讲地域分布 可考虑
D 标准的无聊选项 not consciously 看到这个就干掉
4.浏览A C E
A屁话 Cthe number 同percentage 矛盾
E acquaintance fear 害怕
5.再看B 取非。中国思维:如果有地域差异。则结论nomal 有问题。但有可能认识的人成立。
故而 这道题 只能说 最佳答案 适合GMAC考试的是B 非英语土著不用深究 排除法。
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