og13 cr89 新问题~~求大神指点！

木糖猪

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 fi nancial collapse, have been greatly relieved. They reason that, since top executives evidently have faith in the bank’s fi nancial 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 fi rst describes evidence that has been taken as supporting a conclusion; the second gives a reason for questioning that support. (B) The fi rst 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 fi rst provides evidence in support of the main conclusion of the argument; the second states that conclusion. (D) The fi rst 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 fi rst 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. 我看了cd上已有的解答。A无疑是正确的，我的问题是B和D为什么是不对的？第二部分不是本段的主要结论么？ 谢谢各位~

木糖猪

怎么都没有人，。，

Chuckle

正如A里面说的，第二部分只是一个reason而已，这个reason用于解释为啥对前面的论证进行质疑。