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标题: 这应该是道很常见的PREP破解题了，可还是搞不清楚求指点下啊谢谢 [打印本页]

作者: wjk 时间: 2011-7-19 16:13
标题: 这应该是道很常见的PREP破解题了，可还是搞不清楚求指点下啊谢谢

A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them.Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.

(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.

(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.

(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.

(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
答案：B
做这道题还是用取非的方法么？觉得取非到后面好像很多选项都看上去对的

作者: Heather_Lau 时间: 2011-7-20 00:30
这题不是OG上的么?
A.wrong direction.跟conclusion相反.
B.conclusion是有radar detector的人更容易超速,premises是3%的人安装了radar detectors,但是有33%的超速驾驶者都是安装了radar detectors的,要由premise+assumption=conclusion,就只能假设说那些被ticketed的人是经常超速的人.
C.argument里面没有提到number of vehicles that were ticketed.
D.argument里面木有提到是不是被多次ticketed.
E.无关啊无关啊..

我想说我其实用的是elimination,一直不太明白OG对于B的解释.

作者: chenpeiwen1207 时间: 2011-7-21 00:23
这道题其实还是挺绕的

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