大全-II-16：一道假设题<-------ethyl修改标题

Instead of blaming an airline accident on pilot error, investigators should find out why the error was made by ananlyzing airplane design, airline management, and pilot-training programs. For only then can changes be made to ensure that the same type of error dose not recur and cause another accident.

Which of the following is a presupposition of the argument above?

(A) Pilot error is not a contributing factor in most airline accidents.

(B) Airline companies themselves should be the agents who investigate airline accidents.

(C) Stricter government regulation of airline companies will make air travel significantly safer.

(D) Investigators of airline accidents should contribute to the prevention of future accidents.

(E) Most pilots who make errors in flying will repeat their errors unless they are retrained.

答案是D，我选了A。请各位哥哥姐姐帮我指点迷津，多谢啦！

这是假设题，A取非不能削弱，文章说了pilot error是导致accidence。

D可以。IF Investigators of airline accidents should  NOT contribute to the prevention of future accidents， they don;t need to find out the error at all!