返回列表 发帖

被这道题弄的彻彻底底晕了,OG13 77 ! 什么意思啊

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.
答案B 我选了A
我看了各大论坛的解释,越看越晕! 哪位大侠帮忙解释解释! 谢谢!!
收藏 分享

a选项不是直接和作者的原意相悖吗

TOP

这道题的关键是regularly这个词吧。

TOP

楼主最好用柱状图   我不太好给你画, 一个方形,中间一条线得到两个柱子,一个是ticketers,一个不是, 然后再画横线穿ticketers柱子,代表exceed(任意画), 然后再画大约33%分割线做equiped,由于条件中说了drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly are drivers who do not. 所以两个柱子应该是t的那个分割线柱子大,所以b 不知道楼主看明白了吗

TOP

哪有那么复杂?还画柱状图?
就是个简单的搭桥过程
第一句话是说:所有的车里有3%装雷达,超速被抓(ticketed for exceeding the speed limit )的人里有33%装雷达 也就是说 装雷达的人更容易超速被抓
结论是说 装雷达的人更容易超速  
注意:这里gap就来了, 一个是超速被抓,一个是超速 。这是两个概念
共同元素是装雷达,B 就把超速和超速被抓两者联系起来来
这个题目的道理就如同 : 因为我是人 所以我要吃饭。问你assumption。 很显然assumption人要吃饭

TOP

觉得A也像对,但是没有B直接。
如果装了雷达的车和不装雷达的车相比,都超速了的情况下前者更不容易被抓,而装雷达的车平均被抓几率还比不装雷达的车大,那么就说明装雷达的车比不装雷达的车容易超速。好像是概率问题。。B就不会这么复杂,直接得到答案。其实B是A的结论了。
而且A没有说“超速了”这个前提,可能还是我主观地加上了吧

TOP

A与B的主要区别在于assumption和strengthen的主要区别.

TOP

返回列表

站长推荐 关闭


美国top10 MBA VIP申请服务

自2003年开始提供 MBA 申请服务以来,保持着90% 以上的成功率,其中Top10 MBA服务成功率更是高达95%


查看