GWD-21-28 讨论很长时间，但是没有结果

 GWD21-Q28:

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 since top executives evidently have faith in the
bank’s financial soundness, those worrisome rumors must be false.  They might well be overoptimistic,
however since corporate executives have sometimes bought 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?

1. The first
        summarizes the evidence used in the reasoning called into question by the
        argument; the second states the counterevidence on which the argument
        relies.
2. The first
        summarizes the evidence used in the reasoning called into question by the
        argument; the second is an intermediate conclusion supported by that
        evidence.
3. The first
        is an intermediate conclusion that forms part of the reasoning called into
        question by the argument; the second is evidence that undermines the
        support for this intermediate conclusion.
4. The first
        is an intermediate conclusion that forms part of the reasoning called into
        question by the argument; the second is the main conclusion of the
        argument.
5. The first
        is an intermediate conclusion that forms part of the reasoning called into
        question by the argument; the second states a further conclusion supported
        by this intermediate conclusion.

Evidence:several of a bank's top executives have been buying shares in their own bank
-->Intermediate conclusion:top executives evidently have faith in the bank’s financial soundness-->those worrisome rumors must be false

Main conclusion: the investors are wrong,They might well be overoptimistic

since在这里是because的意思，但是后面的句子并不是一个evidence，真正的evidence是it has become known that several of a bank’s top executives have been buying shares in their own bank。而也是一个推论，由这个推论，引出最后的结论those worrisome rumors must be false.这都是depositors的观点。

D中的main conclusion是作者的最后观点。

...

是不是黑线部分错了...D的后面顺眼 其他的都不太顺眼