我想我明白这道题目的关键点所在了。。(只是也许) 题目说, it is unrealistic to expect such measures to compensate for pilots’ lack of actual flying time,那些训练无法弥补缺少实际飞行时间带来的隐患,所以the airlines should rethink their training approach。 从这里首先能够看出:flying time is an important factor to decrease the air crash。 其次,我们看C选项: The number of airline crashes will decrease if pilot training programs focus on increasing actual flying time. 看出来了吗?这里犯了“非此即彼”的错误. 逻辑里面最忌讳的一个错误. 因为缺少实际飞行时间的问题没有解决,我们需要rethink the approach;但是这绝不意味着增加了飞行时间就可以达到目的吧。 再看D选项: Lack of actual flying time is an important contributor to pilot error in commercial plane crashes. 这句话正是我们看完文章直接推出的结论。 所以选择D而不选C。
Premise: *. how to prevent commercial plane crashes *. pilot error contributes to two-thirds of all such crashes *. upgraded their training programs by increasing the hours of ... *. unrealistic to expect such measures to compensate for ... Conclusion: *. airlines should rethink their training approach to reducing commercial crashes
From choice D, you successfully insert it into the following reasoning chain: pilot error --> plane crash --> changed training --> *less real fly time* --> more crash --> rethink this training
But choice C's reasoning chain is: pilot error --> plane crash --> *more actually fly* --> *decrease plane crash*
So choice C has nothing to do with this conclusion.
D. Lack of actual flying time is an important contributor to pilot error in commercial plane crashes. 意思是:Lack of actual flying time是 pilot error in commercial plane crashes的必要条件
C. The number of airline crashes will decrease if pilot training programs focus on increasing actual flying time.
意思是: Lack of actual flying time是 pilot error in commercial plane crashes的充分条件