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标题: 大全-14-15 [打印本页]

作者: 小兔牙 时间: 2010-4-8 15:40 标题: 大全-14-15

Questions 15-16 are based on the following.
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 unem-
ployed. So at any given time if a person knows
approximately 50 workers, 1 or more will very
likely be unemployed.

15. Sharon's argument is structured to lead to which of
the following as a conclusion?
(A) The fact that 90% of the people know someone
who is unemployed is not an indication that
unemployment is abnormally high.
(B) The current level of unemployment is not moderate.
(C) If at least 5% of workers are unemployed, the
result of questioning a representative group of
people cannot be the percentage Roland cites.
(D) It is unlikely that the people whose statements
Roland cites are giving accurate reports.
(E) If an unemployment figure is given as a certain
percent, the actual percentage of those without
jobs is even higher.

答案：A
两个人对话题的中结论与一个推论中的结论有点不一样，有什么好办法吗？

作者: ookko 时间: 2010-4-9 13:24

我用的排除法

作者: myice 时间: 2010-4-9 13:47

引自mindfree
要理解sharon和roland分别的argument的关系. Roland说90%的人都认识一个失业的人. Sharon说, 一般失业率为5%, 按次比例, 如果一个人认识50个worker,其中有一个就是失业的. 其隐含的意思为:这90%的人都认识很多worker, 所以他们都认识失业的人在正常的失业率情况下也很平常.

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