prep072 40题 超速吃罚单的一种简单的逻辑解释（

uhowoo

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.

这个题的结构是果因结构（先提出现象，然后解释）

题干中的两个数据会引起一个疑问，为什么有特别多的罚单是在有雷达车的身上。
题干最后一句解释说，是因为有雷达的车更喜欢超速。注意: 超速不等于一定吃罚单, 而此处并没有提到罚单，于是需要一个假设来填补这个gap。
B选项说         吃罚单的车更喜欢超速。
与题干解释    有雷达的车更喜欢超速   放在一起，他俩的交集就是，有雷达并且吃了罚单的车更容易超速。这句话就是题干引起的那个疑问的改写了。

thats_lee

这题真的想了好久！超感谢！！

Daisyliu1989

谢谢楼主，看了你的解释，我也明白了，从有rador更容易吃罚单，推出结论有rador更容易超速，中间是有一个GAP，所以assumption就是吃了罚单的人更容易超速。