标题: 始终想不明白哇！那道装雷达更加可能超速的问题……求助！ [打印本页] 作者: modernpl 时间: 2010-8-25 17:06 标题: 始终想不明白哇！那道装雷达更加可能超速的问题……求助！ 看了数十遍了 答案都记得很牢可是说实话还是没怎么想通 78. 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 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.
CDE我都排除了，就是想不通为什么为什么选B呢？？ A是不是和内容不符？ 谢谢~！作者: heygika 时间: 2010-8-25 17:24
你跟我一样,始终还是不明白 =(作者: amy虫子 时间: 2010-8-25 18:50
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. car equipped with radar----more likely be ticketed for exceeding Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not car equipped with radar-----more likely exceed speed limit regardly
