FEIFEI逻辑第23题跪谢~！！

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.
(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.

请问大家这题为什么选A啊！！！（我选的是E）

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bjxiaobei发表于 2012-8-12 06:58 | 只看该作者

补充一下 lz的题目的问题是The argument depends on which one of the following assumptions?

A为取非项。More than one or two airplanes were scheduled for the nine canceled flights. 且由于since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day
因此被取消的9次航班中就存在机械故障原因之外的可能

BCDE都是无关选项
E：所有替代取消航班的航班都被安排在同一个机场。和题干没有任何关系

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annieview发表于 2012-8-13 22:06 | 只看该作者

我这个题也是第一遍做错了，第二遍复习的时候还是琢磨不清楚。。。
到了第三遍——————我才知道原来要把flight和airplane两个概念分清楚。。。

我是这样理解的：
flight——要理解成为比如说机场电子公告栏里显示的飞机班次，比如某某某次A地至B地的航班
airplane——就是对应各自航班的飞机（对于一架飞机来说，每次飞行的班次也都不同，我觉得关键点在这）。

不知道是不是只有我自己一个在做题时混淆了这两个概念。。。但自己觉得这是造成自己思路打结的原因。

题目里给出，Swift Airlines 公司的9个航班被取消，题目没给出取消的具体原因。
结果某游客自己开始YY——一般情况下，Swift Airlines 的飞机比较不可能出现多过两架同时出现机械问题的情况，因此，其中必有飞机是由于机械故障之外的原因而取消的。

但是，谁能保证这9个航班不是由同一架飞机负责的呢。。。（虽然一架飞机一天飞9个班次比较夸张，但不违反逻辑。。）？
所以——这个游客整个推理是建立在有多于2架飞机被安排负责这9个航班的飞行。

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