prep logic 40题请教

gmatziyu

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.
请问这题为什么选Ｂ呢？谢谢

tracyforever

关于这个我也不清楚。至少不合适说“exceed the speed limite regularly”吧。。。
答案应该是：在被开罚单的车子中，装有radar detector的车子比没有装的人更容易频繁地超速。但是好像没有特别合适的！

求高手解答。。。逻辑题越看越迷糊。。。

dphxmg

There is a logical leap in the stimulus argument. The conclusion is that "drivers who equip their vehicle with radar detectors are likely to exceed the speed limit 'regularly' than..." The word, regularly, stands for a concept which does not exist in the premise. Option B bridges the gap.

zhangbutan

原题中说的是曾经被开罚单的人中装备radar detectors的比例高。结论推出：装备了radar detectors的人更频繁的超速。
那么其中有一个跳跃，就是曾经被开过罚单的人更频繁的超速。
这样这个reasoning就变成等价转换了

gmatziyu

明白了！