问题如下:
Business cycles are typical of economies that rely mainly on:
选项:
A.agrarian socities.
B.state enterprises.
C.business enterprises.
解释:
C is correct.
Business cycles are a type of fluctuation found in the aggregate economic activity of nations that organize their work mainly in business enterprises.
考点:Business Cycle Characteristics
解析:经济周期主要是依据一国企业的经济活动所形成的,因为一个个企业才是是经济的组成单位,所以应该选C
AB是什么呀