Exports of United States wood 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 manufactures 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.
对B取非显然削弱了题干的推理：如果US的wood pulp 不符合manufacturers in Japan and Western Europe的要求，那么即便价格便宜他们也不会买US的wood pulp。 所以wood pulp 出口增加的前提假设必须是其质量要求。</P>
C选项中说 if cost were not a factor，但是在该题中由于falling value of the dollar 已经造成了进口成本的降低，所以cost 已然成为一个factor 了，怎么能不考虑呢？当然更不能说是assumption 了。或者对C取非来考虑：“如果不考虑成本因素，Japan and Western Europe不会用US的wood pulp。”本题中成本是因素，那么 Japan and Western Europe就有可能用US的wood pulp， 显然取非不能削弱题干的推理。所以C不对
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发表于 2009-5-1 23:23:00
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