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 implending financial collapse,have been greatly relieved. The reason that, since top 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 role? D The first describes the circumstance that the argument as a whole seeks to explain;the second gives the explanation that the argument seeks 官方解释: The second statement is not itself offered as an explanation of why these bank executives are investing in the bank;if it were ,That would mean that the bank executives are doing so because corporate executives are known to do such things in a calculated effort to dispel worries.Furthermore the argument doesn't conclude that this other explanation(which the boldfaced portion points to)is correct,only that the one inferred by depositors may not be. 不明白官方解释是怎样驳斥这个错误选项的 ?求教,谢谢! |