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.作者: mvmv90 时间: 2010-8-14 22:16
选C 吧，我也是猜的~作者: hedgeforfu 时间: 2010-8-16 06:46
p1: 3%的人有雷达
p2: 33%的被罚超速( ticketed for exceeding the speed limit )的人有雷达
c: 有雷达的人比没有的人更容易经常超速(exceed the speed limit )
there's a gap between "ticketed for exceeding the speed limit" and "exceed the speed limit".个人理解...作者: qurssrou 时间: 2010-8-16 21:42
答案是B
个人愚见：
c中the number 无关 题目问的是超速的可能性啊
A 与原文说反了 equip with radar 超速 less likely than without radar 原文是最后一句 more likely
D次数无关
E other state 没有提及
我是用排除法。
但是不会正推，请指教。作者: douxidx 时间: 2010-8-17 02:12
应该是 D
c 中提到 more likely to exceed the speed limit regularly
即假设being ticked more than once作者: EGHJUYMN 时间: 2010-8-17 06:41
哈哈 我跟你想得一样
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