Advertisement: When your car's engine is running at its normal operating temperature, any major brand of motor oil will protect it about as well as Tuff does. When the engine is cold, it is a different story: Tuff motor oil flows better at lower temperatures than its major competitors do. So, if you want your car's engine to have maximum protection, you should use Tuff.

Which of the following, if true, most strengthens the argument in the advertisement?


Tuff motor oil provides above-average protection for engines that happen to overheat.

Tuff motor oil is periodically supplied free of charge to automobile manufacturers to use in factory-new cars.

Tuff motor oil's share of the engine oil market peaked three years ago.

Tuff motor oil, like any motor oil, is thicker and flows less freely at cold temperatures than at hot temperatures.

Tuff motor oil is manufactured at only one refinery and shipped from there to all markets.

考题讲解

情景:当在正常的工作温度时,所有的机油都差不多。但是,当发动机的温度很低的时候,事情就完全不同了。Tuff的机油在低温下比任何其它竞争对手的流动性都要好。所以,如果你想让你的发动机得到最好的保护,你应该用Tuff。

推理:由于前提和结论讨论的事件不同,且结论是果,所以本题为因果推理
顺序的因果逻辑:因为Tuff的机油在低温下比任何其它竞争对手的流动性都要好,所以如果你想让你的发动机得到最好的保护,你应该用Tuff
(因)前提:Tuff的机油在低温下比任何其它竞争对手的流动性都要好
(果)结论:如果你想让你的发动机得到最好的保护,你应该用Tuff

选题方式:因果推理只有一个评估方向,简而言之,即(由于本题问的是加强,所以答案选项需在“取非”后满足),反驳推理文段中的结论。

选项分析:

A选项: Correct. 在过热的时候,Tuff机油可以给发动机提供平均水准的保护。如果在过热的时候Tuff机油的保护效果特别差,那么我们无法推出Tuff机油会给发动机最好的保护。

B选项:Tuff机油会周期性的给制造商提供免费机油。本选项和Tuff机油的效果无关。

C选项:三年前,Tuff机油的市场份额达到顶峰。市场份额大并不代表Tuff机油的效果好。

D选项:
Tuff机油,和别的机油一样,都在低温下流动的更加不顺畅。推理文段的结论讨论的是Tuff机油和别的品牌的机油相对比,不是自己品牌在低温和高温下相对比。

E选项:
Tuff机油仅在一个精炼厂制造,并且由那里运向全世界。本选项讨论的是Tuff机油的制造情况,和推理文段的结论无关。

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