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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?

正确答案: B

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关于司机公路超速的老题,想问B为什么比D好

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楼主
发表于 2014-5-17 15:31:46 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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.
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沙发
 楼主| 发表于 2014-5-17 15:39:39 | 只看该作者
如果在没有B的情况下,题目改为上述陈述可以推论出下面哪一个结论,是否可以选择D?
板凳
发表于 2014-5-18 08:28:18 | 只看该作者
前提是一个现象(结果):装了雷达的人,更容易(因超速)被罚
结论推出一个原因:那是因为装了雷达的人更容易超速

从这个原因到这个结果中间,少了一层逻辑,也就是说,更容易超速,不等于就更容易被罚。比如,那些超速但是没被抓住的?所以选项B 补充了中间这层逻辑:(因超速)被罚的人,往往就是超速的惯犯。

D选项没办法补充中间缺失的这层逻辑。
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