Feifei-23, 请教NN.

Rocky545

23. On a certain day, nine scheduled flights on Swift Airlines were canceled. Ordinarily, a cancellation is due to mechanical problems with the airplane scheduled for a certain flight. However, since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day, some of the nine cancellations were probably due to something else.

The argument depends on which one of the following assumptions?

 

A.      More than one or two airplanes were scheduled for the nine canceled flights.

B.      Swift Airlines has fewer mechanical problems than do other airlines of the same size.

C.      Each of the canceled flights would have been longer than the average flight on Swift Airlines.

D.     Swift Airlines had never before canceled more than one or two scheduled flights on a single day.

E.      All of the airplanes scheduled for the canceled flights are based at the same airport.

 

参考答案：A 采用取非法。

思路：否定More than one or two airplanes were scheduled for the nine canceled flights.将削弱作者的结论。
            

 

A：取非削弱

B：无关。

C：无关。

D：无关。

E：无关。

以上是原题与解释，B,C,D,E是无关。A 的所谓 “取非法”是什么东东？

google 了一下，无头绪。

求NN指点。多谢！

Rocky545

自己顶一个。

LittleMike

这个题的key在于它用了一个名词上的trick，一个是flight，一个是airplane

题目说九个flights取消了，一般取消flight是因为airplane有机械上面的问题，但是这个公司还是不错不可能一天有九个airplane有问题，所以肯定是因为别的什么取消flight

下面五个假设的A：说这九个flights是安排了不只两架飞机

当然只有A成立了上面题目中说的“必然是因为什么别的原因”才成立，如果只安排了一架airplane飞九个flights，那么这个airplane出问题，当然能够使九个flights取消，怎么能够一定推出有别的原因呢，所以A是必需的假设

至于什么是取非法，我真的不知道，我感觉从字面上和直觉上来说应该就是对于必要的假设来说，你把它否定掉，它一定能够成为题干中的一个flaw，那么就自然削弱了题目中的逻辑，可能这就是取非削弱吧

Rocky545

多谢littlemilk,解释很清楚。

所谓去非法我就不管了。

LittleMike

恩支持“不管法则”，呵呵，个人觉得中国人逻辑足够好，真的读懂了英语一定能做出题，记了那么多所谓的法则有时候反而会记混甚至限制发挥，加油

xiongcissy

顶一个

LittleMike真棒，解释得真好

我也发了同样的呢

一直都没人理，现在看了终于明白了

jinqijia

厉害……牛人……

Dreamsgirl

可是为什么E不对啊？我觉得停在一个机场不就是说有别的可能的原因了吧？比如机场的问题……
好纠结……

LittleMike

原文的逻辑链条中没有提到机场

Dreamsgirl

噢………………
谢谢楼上解答！！！