以下选项除一个外，均被认为是宏观经济的“疾病”，该选项是【 】

What was the possible reason for the shuttle thsaster?A．Columbia could not survive reentry.B．A block of foam damaged a wing.C．The aircraft thsintegrated in the sky.D．The external tank was made of reinforced carbon. 点击查看答案

What do both sides need to do now in order to set up Sony BMG formally?A．To reach an agreement between the two sides.B．To invite some celebrity to join their new firm.C．To publicize their activities.D．To wait for approval by an authority concerned. 点击查看答案