始终想不明白哇！那道装雷达更加可能超速的问题……求助！

modernpl

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~！

芳芳钟

77banana 发表于 2010-10-15 22:39
我觉得这道题很怪原因最主要是超速居然不一定会被开罚单！

超速不一定被罚很正常，因为超速如果不被警察发现就不会被罚。

奇怪的是答案说 “经常被罚的更容易超速”，应该是“经常超速的更容易被罚”才对啊！

77banana

我觉得这道题很怪原因最主要是超速居然不一定会被开罚单！

wuyw2010

这题最好看完题目后就去找A=C的选项，否则没头绪就去斟酌一个个选项会被搞死的

liyi422

终于知道什么是搭桥了

modernpl

嗯嗯！严重感谢！

amy虫子

楼主多练练就熟了，
对于假设题，要么是否定句，取反削弱
                    要么就像上面那题一样条件A--->B,  结论A--->C, 就用搭桥， B-->C

modernpl

哗~原来这就是传说中的搭桥，理论是一直说一直说，没有实践看来是悟不进去！
谢谢ls!~

amy虫子

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

搭桥     be ticketed for exceeding  more likely exceed  speed limit regardly

heygika

你跟我一样,始终还是不明白 =(