OG-96(weaken类)

fiaoyaya

96.The difficulty with the proposed high-speed train line is that a used plane can be bought for one-third the price of the train line, and the plane, which is just as fast, can fly anywhere. The train would be a fixed linear system, and we live in a world that is spreading out in all directions and in which consumers choose the free-wheel systems (cars, buses, aircraft), which do not have fixed routes. Thus a sufficient market for the train will not exist.

Premise: train expensive，不能fly anywhere，fixed routes

Conclusion: 没有足够的市场

显示因果关系的资料不准确（这道题目结论的特殊性和具体性得到了很好的体现）

这是我做OG96的思路,但是当时我选的是A,也就是说我读完题目以后觉得不只是说PLANES, 而选择A的思路是A提出了别的理由,所以起到了削弱的作用,不知道我的思路是否正确,NN们看一下.

Which of the following, if true, most severely weakens the argument presented above?

Which of the following, if true, most severely weakens the argument presented above?

(A) Cars, buses, and planes require the efforts of drivers and pilots to guide them, whereas the train will be guided mechanically. （cars,buses等只是举例，没有市场的主要因素是fixed-routes，所以根据具体性和特殊性，也应该从这方面入手）

(B) Cars and buses are not nearly as fast as the high-speed train will be. （速度，无关）

(C) Planes are not a free-wheel system because they can fly only between airports, which are less convenient for consumers than the high-speed train’s stations would be. （显示原因是错误的，起到了削弱的作用）

(D) The high-speed train line cannot use currently underutilized train stations in large cities. （加强）

(E) For long trips, most people prefer to fly rather than to take ground-level transportation. （加强）
   

[此贴子已经被作者于2006-6-3 11:15:33编辑过]

yaoyao99

I think you need to stick with the exact evidences stated in the choices, instead of extending them out.

A talks about an operational difference between the train and other means of transportation, not extending it out to "fixed-routes" or not.  You shouldn't be connecting the dots yourself.