标题: 关于司机公路超速的老题，想问B为什么比D好 [打印本页] 作者: yangzhao2003xm 时间: 2014-5-17 15:31 标题: 关于司机公路超速的老题，想问B为什么比D好 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. 作者: yangzhao2003xm 时间: 2014-5-17 15:39
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？作者: brfmzbjz 时间: 2014-5-18 08:28
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