OG13 CR89 关于DE错误原因的个人意见

icewaterkira

89. Since it has become known that several of a bank’s top executives have been buying shares in their own bank, the bank’s depositors, who had been worried by rumors that the bank faced impending financial collapse, have been greatly relieved. They reason that, sincetop executives evidently have faith in the bank’s financial soundness, those worrisome rumors must be false. Such reasoning might well be overoptimistic, however, since corporate executives have been known to buy shares in their own company in a calculated attempt to dispel negative rumors about the company’s health.

In the argument given, the two boldfaced portions play which of the following roles?

(A) The first describes evidence that has been taken as supporting a conclusion; the second gives a reason for questioning that support.
(B) The first describes evidence that has been taken as supporting a conclusion; the second states a contrary conclusion that is the main conclusion of the argument.
(C) The first provides evidence in support of the main conclusion of the argument; the second states that conclusion.
(D) The first describes the circumstance that the argument as a whole seeks to explain; the second gives the explanation that the argument seeks to establish.
(E) The first describes the circumstance that the argument as a whole seeks to explain; the second provides evidence in support of the explanation that the argument seeks to establish

这都题的逻辑结构已经讨论了很多了
http://forum.chasedream.com/GMAT_CR/thread-803570-1-1.html?postid=17580090&searchmode=TopicContent&searchtext=Since%20it%20has%20become
这个帖子中1369179610同学解释的非常清晰。
这里我想说的是对于DE选项的一点个人看法。因为我一开始就选的D和E
我感觉DE错在第一句话，The first describes the circumstance that the argument as a whole seeks to explain，因为这个题目的逻辑意思是表达作者的观点Such reasoning might well be overoptimistic。而不是想解释several of a bank’s top executives have been buying shares in their own bank,这个背景。当然，既然DE的第一句话就错了，第二句说作者想给自己的解释提供论据也是错的了。
不知道自己这个观点对不对~~希望大家看看~~

zcdzheng

嘛 但是整个argument确实是围绕这高管买股票这个事展开的  要说argument是想解释这个情况也说的过去