今天做了OG的题目，但是还是做错了，因为自己并没有很好地消化这个笔记。然而，在整理错题是，发现把helr的办法放进去，题目一下就清晰了。之后又在另外一个地方见到非常类似的结构的CR，感觉这个大概算是GMAT CR的一个比较典型的逻辑结构题目。先上题目：
我做错的是OG2019，文本逻辑推理复习CR部分，#138题， 140页。
138. Budget constrains have made police officials consider reassinging a considerable number of officers from traffic enforcement to work on higher-priority, serious crims. Reducing traffic enforcemnt for this reason would be counterproductive, however, in light of the tendency of crimnals to use cars when engaged in the commission of serious crimes. An officer stopping a car fro a traffic violation can make a serach that turns up evidence of serious crime.
Which of the following, if true, most strenthens the arugment given?
A, An officer who stops a car containing evidence of the commssion of a serious crime risks a violent confrontation, even if the cehicle was stopped only for a traffic violation.
B, When the public becomes aware that raffic enforcement has lessened, it typically becomes lax in obeying traffic rules.
C, Those willing to break the law to commit serious crimes are often in committing such crimes unwilling to observe what they regards as the lesser constraints of traffic law.
D, The offenders committing serious crimes who would be caught because of traffic violations are not the same group of individuals as those who would be caught if the arresting officers were reassigned from traffic enforcemnt.
E, The great majority of persons who are stopped by officers for traffic violations are not guilty of any serious crimes.
part 1:
目标：reduce serious crimnals
方案：by reducing traffice enforcement
part 2:
However, comment: this plan cannot work (counterproductive).
Premise: traffice violation - serious crime
Quetions: why does not the plan work?
因此题目被我转换成了因果关系：为什么因（reduce traffice enforcement) 不能导致果 （reduce serious crime)
那么为了解释这个关系，答案肯定不可避免要提到traffice enforcement 和 crime 之间的关系。那么B, D, E 都马上就排出了。留下A和C。 A其实也是有这种可能性存在的，但是我自己想这个还是比较小概率事件的，也不可能哪个警察真这么倒霉会必然的遇到这个事情。（这个感觉有点自己胡诌）。 不过相对比C，这个就很有普遍适用性了，而且题目问的方式也是哪一项最 most strengthen。 因此选择C。
Tiger sharks are common in the waters surrounding Tenare Island. Usually tiger sharks feed on smaller sharks, but sometimes they have attacked tourists swimming and surfing at Tenare’s beaches. This has hurt Tenare’s tourism industry, which is second only to its fishing industry in annual revenues. In order to help the economy, therefore, the mayor of the island has proposed an ongoing program to kill any tiger sharks within a mile of the beaches.
Which of the following, if true, most strongly calls into question the likelihood that implementation of the mayor’s proposal will have the desired consequences?
(A) Even if not all the tiger sharks that come close to the beaches are killed, the existence of the program would reassure tourists.
(B) Business owners who depend on tourism are willing to pay most of the cost of implementing the program.
(C) Tourists come to Tenare Island for its beaches, even though the island features a number of other tourist attractions.
(D) The small sharks on which tiger sharks prey feed on fish that are commercially important to the island’s fisheries.
(E) Not all tourists who come to Tenare Island enjoy swimming or surfing.”
我这个题目做对了，感觉是因为刚好分析完警察那个题目而且两个题目之间有很大的相似性。所以这个题目很快就排出了A，B， D ， E， 因为没有任何涉及到kill tiger sharks （方案） 和improve local economy （目的）直接到关系。