单选题 The recent dramatic increase in commuter airline crashes is caused in large part by pilot inexperience. As a major growth industry, the commuter airlines have recently had a great increase in the demand for experienced pilots. It is impossible to define and assess pilot experience, however. For example, someone with 1,000 hours of flight experience as an instructor in Arizona, where the weather is good, cannot be compared to someone with 1,000 hours' experience as a night cargo pilot in the stormy northeastern United States.
The author's conclusion that the dramatic increase in commuter airline crashes is caused by pilot inexperience is most weakened by the fact that the author has

A、 argued that it is impossible to measure "pilot experience. "
B、 used an example that does not relate logically to the point being illustrated.
C、 provided only a partial explanation for the increase in commuter airline crashes.
D、 made an unfair comparison between experience as a flight instructor and experience as a night cargo pilot.
E、 (E) not specified how much of the recent increase in commuter airline crashes is due to pilot inexperience.

【正确答案】 A

【答案解析】[解析] 作者的论述具有自相矛盾性，一方面他把飞机坠毁归因于飞行员缺乏经验，另一方面他又说对飞行员的经验进行确定和评价是不可能的，由此可知(A)是正确答案。