请教OG-171题

toriyu · 发表于 2003-9-14 10:41:00

A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with rader detectors,33% of all vehicles ticketed for exceeding the speed limit were equipped with them.Clearly ,drivers who euip 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 following assupmtion?
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.

答案是B,而我认为是A，因为对A取非，即如果装了雷达的车更容易被抓，那么原文中（被抓住罚款的车中装雷达的车比例高）就不足为怪。因此推出的结论也就不成立。

请问xdjm何解？

fyhllj · 发表于 2003-9-14 11:36:00

这是一个三段论命题
例如：凡科学都是有用的
凡社会科学都是科学
------------------
所以，凡社会科学都是有用的

本题：
因超速吃罚单的人更容易再次超速
车上装雷达的人容易吃发单
所以：
Clearly ,drivers who euip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

Hope that is helpful.

fyhllj · 发表于 2003-9-14 11:38:00

本题：

因超速吃罚单的人更容易再次超速(选项B)

车上装雷达的人容易吃发单(33% of all vehicles ticketed for exceeding the speed limit were equipped with them)

所以：
Clearly ,drivers who euip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

Hope that is helpful.

Pudding · 发表于 2004-10-22 23:27:00

这题我想了绝对超过半个小时, 又把以前所有的帖子都翻出来前前后后的想, 正觉得受不了了想等明天脑袋清醒点再重看的时候, 忽然间就开窍了…^______^

可是因此想引申一下这道题. 我认为这题最大的陷阱是在于 “regularly”, 那么假设题目改一改, 最后一句变成:

Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit than are drivers who do not.

也就是拿掉 “regularly”,

那么A是否就对了呢?

Avantasia · 发表于 2005-4-12 15:34:00

个人感觉如果把regularly去掉A就正确了，相当于一个实事型的说明，不知道大家意见如何？

swlfx · 发表于 2005-6-2 13:32:00

以下是引用fyhllj在2003-9-14 11:38:00的发言：
本题：

因超速吃罚单的人更容易再次超速(选项B)

车上装雷达的人容易吃发单(33% of all vehicles ticketed for exceeding the speed limit were equipped with them)

所以：
Clearly ,drivers who euip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

Hope that is helpful.

swlfx · 发表于 2005-6-2 14:10:00

以下是引用fyhllj在2003-9-14 11:38:00的发言：
本题：

因超速吃罚单的人更容易再次超速(选项B)

车上装雷达的人容易吃发单(33% of all vehicles ticketed for exceeding the speed limit were equipped with them)

所以：
Clearly ,drivers who euip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

Hope that is helpful.

thank you。

beautyup · 发表于 2005-6-2 17:03:00

我也在这里班门弄斧一下：

evidence 1: 3% drivers equipped with radar

evidence 2: 33% drivers ticketed--> equipped radar

conclusion: radar-->exceed s-limit

assumption需要找到那个ticket-->exceed s-limit的桥梁（架桥法）

所以，选B

chrislee0709 · 发表于 2005-8-22 12:40:00

不好意思..這個命題按照此解法是很清楚

但是他的第二個假設如何得到的呢...中文與英文有落差

车上装雷达的人容易吃发单(33% of all vehicles ticketed for exceeding the speed limit were equipped with them)

roric · 发表于 2006-7-23 11:47:00

顶一个，关于选项A

请教OG-171题

请教OG-171题

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