[讨论]feifei逻辑23

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.

(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.

我选的是D

按费费的思路
evidence1：a cancellation is due to mechanical problems with the airplane scheduled for a certain flight

evidence2：since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day一天不可能多于1-2趟航班出现机械故障

argument：some of the nine cancellations were probably due to something else.

A选项 More than one or two airplanes were scheduled for the nine canceled flights.被取消的9趟航班被安排在多于1-2架飞机上

飞机是飞机，航班是航班，我怎么都不能把evidence和argument联系上推出assumption，是不是自己智力太低了……

我也选成D了

我这题也选的是D..汗..呵呵..

我觉得飞机和航班不是重点,他们表达的意思应该是一样.这里应该是建立联系,填补GAP.

为了证明不是mechanical problem 导致了cancel而是其他原因,

陈述了一个evidence是 Swift 不可能有mechanical problems with...., 而assumption 将a certain day的情况和...联系起来,

使evidence 完整地完成因果.

因: Swift 不可能有mechanical problems with...., on a certain day, 9 flights canceled 在...情况下,

果: cancel 不是mechanical problem 导致的, 有他因.

vote for A

我觉得做这种题目不是自己去想怎么样把GAP补出来，因为很多情况下你是想不到他的GAP的。

所以采用比较选项的方法好。注意假设题 的验证方法就是取非削弱。（如果不知道这个方法请参见 lawyer逻辑）

我是这样做的原文说 某一天某个航空公司取消了9个航班，一般是取消都是由于机械故障，S一般不太可能发生超过1到2架被安排的飞机的机械故障，所以9次的取消里肯定有些其他原因。

A 多于1到2架飞机是这9次取消的原因。（这个直接取非，只有1到2架飞机是这9次取消的原因。）这个正好可以削弱原文么。

D S公司以前从来没有取消过多于1到2架飞机在一天。（首先我做的时候直接排除了因为他以前有没有取消和我现在是不是因为飞机故障取消一点都没有关系。）如果你做的时候觉得这个是干扰项的话，就直接取非。取非后变成S公司以前也取消过多于1到2架飞机在同一天。（这个还是和我的结论没有任何关系。我的结论 是S公司取消的9次航班一定有不是机械故障造成的。）

其实这里有个trap,就是flight.前面一个表示航班，后边一个表示飞机。

However, since it is unlikely that Swift would have the mechanical problems with more than one or two scheduled flights on a single day。