黑脸题大破解（8）

感兴趣的请参见: 黑脸题大破解
        系列贴

Several of a certain bank’s
top executives have recently been purchasing shares in their own bank.  This activity has occasioned some surprise, since it
is widely believed that the bank, carrying a large number of bad loans, is on
the brink of collapse.  Since the
executives are well placed to know their bank’s true condition, it might seem
that their share purchases show that the danger of collapse is
exaggerated.  However, the available
information about the bank’s condition is from reliable and informed sources,
and corporate executives do sometimes buy shares in their own company in a
calculated attempt to calm worries about their company’s condition.  On balance, therefore, it is likely
that the executives of the bank are following this example.

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

1. The first describes the
        circumstance the explanation of which is the issue that the argument
        addresses; the second states the main conclusion of the argument.
2. The first describes
        the circumstance the explanation of which is the issue the argument
        addresses; the second states a conclusion that is drawn in order to
        support the main conclusion of the argument.
3. The first provides
        evidence to defend the position that the argument seeks to establish
        against opposing positions; the second states the main conclusion of the
        argument.
4. The first provides
        evidence to support the position that the argument seeks to establish; the
        second states a conclusion that is drawn in order to support the
        argument’s main conclusion. 
5. Each provides evidence
        to support the position that the argument seeks to establish.

1）
                作者：即作者

2）结论：On balance, therefore, it is likely
that the executives of the bank are following this example.

3）逻辑图：银行头目纷纷购买本行股票（表明事件）——》令人吃惊，因为该行濒临倒闭——》他们好像在稳定民心，因为他们知道自己的老底——》但是，他们确实非常清楚自己的底细，我敢肯定他们在糊弄人民群众——》所以总之银行老总们在操蛋。

4）circumstance: 情况（一般事实，类似context背景）

5）联系：2是最终结论
        （On balance, therefore
            明确指出）。Rule out BDE

         A符合逻辑图中的表明事件。