Exports of United Stateswood pulp will rise considerably during this year. The reason for the rise is that the falling value of the dollar will make it cheaper for paper manufacturers in Japan and Western Europe to buy American wood pulp than to get it from any other source.
Which of the following is an assumption made in drawing the conclusion above?
A.Factory output of paper products in Japan and
Western Europe will increase sharply during this year.
B.The quality of the wood pulp produced in the United States
would be adequate for the purposes of Japanese and Western European paper manufacturers.
C.Paper manufacturers in Japan and Western Europe would prefer to use wood pulp produced in the
United States if cost were not a factor.
D.Demand for paper products made in Japan and
Western Europe will not increase sharply during this year.
E.Production of wood pulp by United States
companies will not increase sharply during this year.
为何C不对呢？ C 不是题中论证的逆否命题吗？作者: nesstang 时间: 2012-10-22 21:09
在B和C两个之间犹豫了很久，查了别的论坛说的话。研究了C很久，终于领悟为啥选B。个人觉得这道题目出得不是很好，不像Gmat的风格，anyway，还是来看看吧。
这是国外论坛上面一个人的回复
(C) Paper manufacturers in Japan and Western Europe would NOTprefer to use wood pulp produced in the United States if cost were not a factor.
Well, okay. They wouldn't want to use U.S. wood pulp if cost weren't a factor; however, this argument says that cost is a factor. It is cheaper for the foreign countries to use U.S. wood pulp because the dollar is falling. In fact, the argument uses cost as a premise for why the U.S. export of wood pulp will rise. Thus, cost IS a factor. What they would prefer otherwise is irrelevant to this situation, and thus this answer does not destroy our conclusion.
