请教狒狒77~

supervivian

77. 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 airline have upgraded their training programs by increasing the hours of classroom instruction and emphasizing communication skills in the cockpit(驾驶员座舱). 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?

(A) Training programs can eliminate pilot errors.

(B) Commercial pilot routinely undergo additional training throughout their careers.

(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.

(E) Communication skills are not important to pilot training programs.

答案是d，可是为什么c不对呢。。。想不明白，请大家帮助啊

francoiswang

个人认为楼上的答案都不对   c说的是airline crash    而题目说的是

commercial airline crash   楼主应该再好好看看题

wojiaodubing

一个充分条件一个必要条件，不可混为一谈。

victoria_cc

本人觉得C项目太绝对化了  D项目比较严谨  如果按照C的话  只要

actual就可以了   而事实上是两者都要的

dumengxuan

个人感觉，逻辑链是fly time->pilot error->crashes, 所以C跳过了前一个因果关系，而D把这个补出来了