GMAT 逻辑推理常见错误分析
请先试着做做这题，正确答案八选一。剩下七个选项都要思考“是什么类型的错误”。
Indonesia has long been shadowed by its growing problem of drugs abuse. To deter people from selling drugs, the country’s National Narcotics Agency has suggested the punishment that Drug dealers in Indonesia will be made to eat their own supply until they die.
Which of the following, if true, would most seriously call the suggestion above into question?
(A) some seriously abused drugs, such as Methcathinone, are not banned in Indonesia.
(B) If Indonesia successfully tackled the drugs abuse, the GDP of Indonesia will significantly drop by almost half.
(C) Drugs dealers in Indonesia are generally not aware of the lethal effect of excessive drug intake.
(D) The rate of drugs abuse in Indonesia is much higher than in Philippine.
(E) Indonesia government believes that they will tackle traffic congestion with priority to drugs abuse.
(F) The problem of drugs abuse can be solved by treatments to drug addicts.
(G) The average price of drugs in Indonesian black market has been soared to a level that most drug addicts cannot afford.
(H) Unlike lethal drugs such as heroin, some drugs, such as LSD, are not lethal to human.
答案（反白后观看）：C
障碍一：抓结论
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本文的结论是：To deter people from selling drugs, the country’s National Narcotics Agency has suggested the punishment that Drug dealers in Indonesia will be made to eat their own supply until they die. 结论的主题在目的“阻止人们贩卖毒品”。
抓不到结论的请参考：CR基础（一）：如何找到结论句？
障碍二：预测思路
本题叙述类型是“方案”，题目所问方向是“削弱”。方案+削弱题的正确答案基本思路，就是点出可能会使“目的”不成立的副作用。而常见错误答案的出法，就是让选项写出不会影响“目的成立与否”的因素。看完之后脑子里面没有尝试想过可能的正确/错误答案思路方向的，请参考：CR基础（二）：看选项前，尝试预测正确/错误答案思路
障碍三：基础错误初步筛选
B、E：这两个选项是“主题无关”。
如果选到B/E，代表没有意识到结论主题与选项重点的关联。既不是B的“对GDP的影响”，也不是E的“塞车问题”。结论的主题只有一个，就是“阻止贩卖毒品（方案的目的）”。
D：无关比较。
F：他方案无关。
方案类型的题目跟因果类型的题目不同。就算别的方案成功了，不代表我的方案会失败。
以上四个选项若是选错或者不选但却不能说出明确的错误理由，请参考：CR基础（三）：选项初步筛选
障碍四：混淆选项抉择
A、H： 故意有点出相关因素，但方向相对不确定。
选项乍看之下令人犹豫：如果最严重被滥用的药物没有被禁止，那这个方法的效用不就打折扣了吗？但是注意到相较于C选项的“general”，A选项中的程度用字“some”较不全面。some是1%呢？还是99%呢？方向相对不确定。 G、H：故意把态度写得很明显（缺点写得很清楚），但仔细检查却发现跟结论讨论的主题有断桥。 文章的主题叫“阻止贩卖毒品（方案的目的）”，而G选项的重点在于“人们有没有钱买”。请问人们不买，药头就会不卖吗？H选项的重点在于“是不是有些药吃不死人”。请问你的重点是要吓阻毒贩呢？还是
