| 在网站上做了逻辑题,对这一题很有感触。总结了一些方法,希望能对和我一样的小伙伴有用。如果有不同意见欢迎指出。 题目:
 
 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?
 
 ABacteria are not the only impurities that must be removed from wastewater.  BMany municipalities have old wastewater purification systems that need to be replaced.  CConventional wastewater purification systems have not been fully successful in killing bacteria at cold temperatures.  DDuring times of warm weather, when it is not in use, QuickFreeze's purification system requires relatively little maintenance.  EPlaces where the winters are cold rarely have a problem of water shortage.
 我选了D,但是后来想了很久才想明白为什么选C。问:那个提供了最有力的支撑说市政当局尽管在维持/供养旧的系统的同时,还要购买新的系统?注意这里despite是尽管的意思,我觉得和although一样,引导的东西都不是这句话要表达的重点,而另一句才是。所以这句话的意思是说:为什么(保留了旧的还要)买新的?适当的逻辑应该是新的有比旧的好的地方(所以买新),但是也有比旧的不好的地方(需要旧的来弥补)。所以题目中所有说新旧对比的应该都可以。而我原来的理解是:为什么买了新的还要维持旧的?细细体会这两者的不同。关于maintain的理解也影响了这句话的重心,我以为maintain得是花大力气大价钱那种维持,但是:1. To continue to have, to keep in existence, or not allow tobecome less; 2. To keep a road, machine, building etc.in good condition.3 toexpress firmly your belief that sth is true. 4. To provide someone with food andwhatever is necessary for them to live on. 读下来并没有很费力气的感觉,就是正常的“保持,和原来一样”的感觉。
 
 
 A:无关;B:如果replace了那就不需要保持旧的了;C:说明新比旧好,所以要买新的。D:其实我选D就是默认了C的选项,即新的比旧的杀菌好,但是新的只能在低温使用,所以新的在夏天的时候就会lack of use,产生新的成本,这个时候就要用旧的。而新的在夏天的时候成本低,对于市政当局来说就是好事-维持旧的同时也会买新的。总结下来会发现D的逻辑推断太长了,而且人家只是说了为什么要在保留旧的的情况下买新的,新的在夏天成本低只是新的自己的好处,并不能体现出新旧的对比。E:无关。
 
 以上。
 
 
 
 
 
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