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OG11版第81题?

81. A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 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.

本题实在想不通,请高人指点.感谢!

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还是觉得挺晕的。

路漫漫其修远兮,吾将上下而求索。

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非常感谢楼上的解释,明白了!

尤其是2楼的解释,感觉非常到位,使我联想到了argument的写作,太棒了.

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Assumption 题型采用取非削弱的方法判断比较快速准确。

A 取非,装了雷达装置的司机更容易因超速而被抄牌。支持原题结论。

C 无关。题目结论说的是哪种司机更经常被抄牌,与抄牌车辆数无关。

D 取非,被抄牌车辆没有被抄牌多次。支持原题结论。

E 无关。题目只讨论了MARYLAND的情况。

排除其余四个。只能选B。

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文章从因为超速而被处罚的某一类人中,推出这一类人的整体的数据

需要一个前提,那就是因为超速而被处罚的这样的一类人的数据有足够的代表性,方可推到整体。

B说明,这样的数据有足够的代表性。

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