og11-81

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

(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

这个答案b怎么出来呢，比如总人口10，000，3%即300人装了雷达,超速被开罚单的100人中33个人装有雷达，

那么就推不出b阿？

这个题目我绕不清，

题干：3%装雷达，33%超速被罚款的人装有雷达=〉(可以推出：装雷达的人比不装的人更容易由于超速被罚款)
        题中推出：装雷达的人比不装雷达的人更容易经常超速。

那么中间缺的桥就是：被罚款的人更容易经常超速。

装雷达的人=>超速被罚款的人=>经常超速的人

原题中，前提是一次调查的数据，结论是装雷达的司机比不装的更可能经常超速。

重点在于注意结论中regularly这个词，即一次调查的结果反映的可能性是否可以推到长期的可能性，而B就很完美地架了一个桥，把二者联系起来。

所以很多时候作假设题时找差异概念从而找出推理上的GAP是很有用的