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标题: 请教og-171题 [打印本页]

作者: wholly 时间: 2004-3-9 00:26
标题: 请教og-171题

171. 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.

看了og的解释还是不明所以，哪位大侠给指教一下，thanks a lot!

作者: 番茄炒蛋 时间: 2004-3-9 11:35
原文说了两个事情

一是被抓的很多有雷达

结论是有雷达的喜欢开快车

这中间就有一个逻辑上的跳跃，应该由b来补上，被抓的大都喜欢开快车

作者: delldell 时间: 2004-3-10 00:34
这是假设当中的桥梁题, 确实有点绕

超速被开罚单的装有雷达 ---> 装有雷达的经常超速

所以开罚单和经常超速中间要有桥梁, B is the right answer

作者: Fabulous 时间: 2005-1-3 18:08

不是问关于OG 187吗?

可是大家分明讨论的是OG 171啊

这是为什么?

OG187大家都懂了吗?

请指教

作者: babypace 时间: 2005-1-4 02:40

昏倒. 这可是挂着羊头卖狗肉啊.

标题得改改

作者: swlfx 时间: 2005-6-2 19:16
THANKS TO DELLDELL AND 番茄炒蛋.

作者: fishlibai 时间: 2009-7-18 04:52

恩，看了讨论明白了。

原文的evidence ：装雷达的比不装雷达的更容易拿tickets

中间的assumption:

最后的conclusion: 装雷达的比不装雷达的更喜欢regularly超速

那么中间连接的应该就是答案B：拿ticket的比不拿ticket的更regularly超速

作者: zy290574668 时间: 2009-7-20 22:19
装雷达的比不装雷达的更容易拿tickets

怎么看出来的啊？

作者: 潜寒 时间: 2011-5-13 22:40
我的理解是原文吧那些ticketed for exceeding the speed limit的drivers和 drivers who are more likely to exceed the speed limit regularly概念等价了----这是gap
171. 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.

而B选项弥补了这个gap，就像是lawyer逻辑中说的：原文的推理过程中有概念的跳跃

不知是不是这个道理。。。求NN指正

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