一道重要的难题，大家看看吧

84. 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 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.

这题的答案是B，我选的是C。

因为没有答案解释，我不明白为什么选B。

我觉得用有关无关，C比B更好，大家觉得呢？？

因为题目的条件是美元贬值，而结论是wood pulp出口增加导致价格上涨。

假设条件就是从条件到结论之间的一个gap，我觉得就是wood pulp可以顺利出口。日本和欧洲可能原来根本不从美国进口wood pulp也不知道其质量如何，这时候，B选项就是比较relevant的答案。

我觉得ls分析的不对，前提和结论也说错了。

这是因果关系型文章。

前提是美元贬值引起成本cheaper，结论是今年pulp出口将增加。

我觉得B和C都有道理，但是不知道如何选优。

最信服的解释应该是从假设题的本质出发，就是找必要条件。

但是我不知道怎么解释：B是必要条件，而C不是必要条件。

所以请大家帮帮忙

日本和欧洲进口美国的东西，是因为便宜。这是作者认为的唯一原因。

assumption类题的答案可以是cover 一个gap，或者是 crush 一个 可能性。答案B属于第二种。

C不对是因为cost是选择美国东西的原因。