根据(),经济周期扩张阶段的持续期间和强度取决于酝酿期间的长短,即决定生产到新产品投入市场所需的时间。
A.纯货币理论
B.创新理论
C.心理理论
D.投资过度理论
参考答案:C
Much to his surprise, he invited only twenty friends in the dinner, but_____came.
A.twice as many as
B.as many as twice
C.twice as many
D.twice more than
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