[求助]assumption如何在条件句中加not/last2/s2/19

mzyzhu · 发表于 2003-9-13 01:43:00

19. How do the airlines expect to prevent commercial plane crashes? Studies have shown that pilot error contributes to two-thirds of all such crashes. To address this problem, the airlines have upgraded their training programs by increasing the hours of classroom instruction and emphasizing communication skills in the cockpit. But it is unrealistic to expect such measures to compensate for pilots’ lack of actual flying time. Therefore, the airlines should rethink their training approach to reducing commercial crashes.

Which one of the following is an assumption upon which the argument depends?

(C) The number of airline crashes will decrease if pilot training programs focus on increasing actual flying time.

(D) Lack of actual flying time is an important contributor to pilot error in commercial plane crashes.

问题是，如何判断C不是assumption.按照OG的方法，加not.但是这个充分条件句如何加。将其变成一个否命题？if ...training will not focus on actual flying, the number will not decrease. 看似一个正确答案。

但是我觉得关键是C的逻辑推理跟提干部分的无关。提干说的时classroom training and communicatiuon skill必须compensate actual flying time.并没有提到是否要focus on actual flying.

不知道大牛们时如何判断的？

[此贴子已经被作者于2003-9-13 1:52:36编辑过]

fyhllj · 发表于 2003-9-13 13:07:00

not should be added in main clause.
The number of airline crashes will (not) decrease if pilot training programs focus on increasing actual flying time.

If the above assumption is true, the expect's suggestion is suspicious.

I think that is what you want.

Hope that is helpful.

mzyzhu · 发表于 2003-9-13 15:25:00

以下是引用fyhllj在2003-9-13 13:07:00的发言：
not should be added in main clause.
The number of airline crashes will (not) decrease if pilot training programs focus on increasing actual flying time.

有点意思！！

还有其他高手发表不同见解吗？

[此贴子已经被作者于2003-9-13 15:25:55编辑过]

[求助]assumption如何在条件句中加not/last2/s2/19

[求助]assumption如何在条件句中加not/last2/s2/19

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