这道题我觉得体现了bible说的"read CLOSELY", 一个是"
exceed the speed limit REGULARLY"，一个是"ticketed for exceeding the speed limit"，这两个概念不同，作者作了一个shell game（偷换概念），那么就必须有个assumption说这两者等价。
我第一遍看快了就没看出来区别。当时我预测答案，我想的是
conclusion: radar -> speeding
那作者的assumption很可能就是defender assumption, "the causal relationship cannot be reversed"，就说不可能speeding -> radar
然后没找到我期待的这个答案，回头重新审视，才发现了那个shell game.
我总结的教训就是：
1. read closely;
2. 首先找是否存在gap。如果存在，答案就找填补gap的supporter assumption；如果不存在，那么才预测答案会出现defender assumption，而defender assumption通常不能prephrase，直接看选项（如bible经常说的"A review of the argument does
not reveal any conspicuous
flaws, and so upon encountering the question stem, you should
expect to see a Defender answers." ）这题属于存在gap的情况，所以我一开始的思路（往defender上面去考虑）这是不对的，这是由于没有read closely从而没发现gap.
类似题目：bible p.194 第1题 也是属于stimulus存在"shell game"，而assumption是supporter assumption来填补这个gap.
这个是我昨天最大的收获~~不同的题目针对不同的方法，assumption就基本这两个方法
不过在gmat的逻辑中，新东方的高智威老师还有昨天的前辈也说过，主要是考supporter assumption,
结合具体题目看咯~~有些用取非一下就明白啦，一些用架桥才行，比如昨天og的一道题目
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. B
(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.
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.
結論說有裝測速器的車比較容易超速
The conclusion drawn above depends on which of the following assumptions?
裝了測速器應該比較不會被開罰單，但是卻還是被開，也就是說那些被開罰單的人是真的愛超速!
簡單的來說
觀察: 被開罰單的人(A)= 裝測速器的人(B) 而結論是裝測速器(B)=愛超速(C)
要如何推論出(B)=(C)呢? 前提就是被開罰單的人(A)=愛超速(C) (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.(被開罰單的人比沒被開罰單的人容易超速）
-- by 会员 Suri在奋斗 (2012/2/13 18:21:02)
-- by 会员 babybearmm (2012/2/14 10:40:30)
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发表于 2012-2-14 00:55:47
发表于 2012-2-14 10:40:30
楼主
今天继续学习~\(≧▽≦)/~啦啦啦
date gamt~~