prep1-48，无法排除B选项，请教，无前人贴。

An overly centralized economy, not the changes in the climate, is responsible for the poor agricultural production in Country X since its new government came to power.  Neighboring Country Y has experienced the same climatic conditions, but while agricultural production has been falling in Country X, it has been rising in Country Y.
Which of the following, if true, would most weaken the argument above?

(A) Industrial production also is declining in Country X. 问题涉及的是农业，和工业无关
(B) Whereas Country Y is landlocked, Country X has a major seaport. 迷惑项，排除不掉
(C) Both Country X and Country Y have been experiencing drought conditions.重复前提
(D) The crops that have always been grown in Country X are different from those that have always been grown in Country Y. 正确，他因削弱
(E) Country X's new government instituted a centralized economy with the intention of ensuring an equitable distribution of goods. 只是对集权经济进行描述，和农业无关

这题选D，无异议。关键是B选项排除不掉。

很典型的他因削弱，但是B 两地的地域条件，和D两地种植的庄稼种类不同 不是都是他因么？？

请教各位～

我也在做这道题....后来想想, 这是另外一种思路的题型...不是简单的因果关系, 是类比.

country X:  Econ ----- poor Agriculture                                                             crop   falling

              not changes in climate ---- poor agriculture

Country Y: so same climate -----  ( if the eco is the same ) should produce the same amount of crop    crop increasing

按照LAWYER NN:       原文是类比：WEAKEN方式为两者本质不同.

  C 正好说明了本质不同

最终结果是产量不同。

B说Y在内陆而X有海港，D说CORPS有区别。

虽然B和D都在说XY的不同，但只有D与结论相关吧。

谢谢ls两位提供的思路，我觉得都有道理，全是知识漏洞哈～