GMAT逻辑题一直以来是不少考生的弱项，因为逻辑题考查的不只是考生对于英文题目的阅读和理解能力。考生必须具备一定的逻辑推理思维能力才能做好此类题目。下面小编就通过一些GMAT逻辑真题的完整分析来为大家讲解这一难点题型的解题思路和技巧。
例题分享：
Snowmaking machines work by spraying a mist that freezes immediately on contact with cold air. Because the sudden freezing kills bacteria, QuickFreeze is planning to market a wastewater purification system that works on the same principle. The process works only when temperatures are cold, however, so municipalities using it will still need to maintain a conventional system.
Which of the following, if true, provides the strongest grounds for a prediction that municipalities will buy QuickFreeze’s purification system despite the need to maintain a conventional purification system as well?
(A) Bacteria are not the only impurities that must be removed from wastewater.
(B) Many municipalities have old wastewater purification systems that need to be replaced.
(C) Conventional wastewater purification systems have not been fully successful in killing bacteria at cold temperatures.
(D) During times of warm weather, when it is not in use, QuickFreeze’s purification system requires relatively little maintenance.
(E) Places where the winters are cold rarely have a problem of water shortage.
题目类型：
strengthen
题目翻译：
造雪机器通过喷射遇到冷空气时迅速冻结的雾气来达到工作目的。因为这种突然的冻结可以杀死细菌，QF公司想推广一种运用同样原理工作的净水系统。但是，这套系统仅仅在温度较低的时候才能有效运行，所以市民在用新系统的同时仍然需要保持传统的净水系统。问如果下面哪一项是真的，市民在尽管需要保持传统的净水系统的情况下仍然会去购买新系统。
解题思路：
找到新系统比老系统更好的地方。
逐项分析：
A、细菌不是唯一需要从纯水中祛除的杂质。无关。
B、无法支持。即使老系统需要被代替，市民仍然可以只购买新的老系统而不购买新系统。
C、正确选项。因为老系统在低温下无法完全杀死细菌，故新系统有用武之地。
D、弱支持。在温暖的天气里，新系统需要较少的维护，但不知道在寒冷的天气里其维护费用会不会很高。
E、冬天很冷的地方一般没有缺水的问题。无关。
正确选项：
C
