prep test2-40

40.
            (32847-!-item-!-188;#058&007552)

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.

这道题目,最后用排除法停留在A,B上,老实说,想不通,觉得两个选项都模棱两可,答案是B,求达人解释一下

答案选B。我说一说我的想法。原文中强调的是regularly，我们必须找一个能连接上regularly的选项。很不幸，只有B选项有，所以就选B。如果这样做不放心，我们来看一看道理所在。首先在原文给出的条件中，其实超速者和装雷达者是两个有交集的集合。为了证明装雷达的会regularly超速，那么只要超速者regularly，那么交集中装雷达的部分也regularly超速。也就证明了装雷达的会regularly超速。如果这样还不明白，再从全文整体把握来说，原文描述的都是超速和雷达的问题，没有提到转为regular habit的问题，而结论讲的就是regular的。假设必须补充这部分内容。只有B选项讲了regular的问题，所以选B。