( )是指经济运行过程中繁荣与衰退的周期性交替。
A．经济规律
B．经济交替
C．经济周期
D．经济变动
参考答案：C
At the good new __ ___.
A．up he jumped from his chair
B．up jumped he from his chair
C．from his chair did he jump up
D．up from his chair did he jump
肘关节脱位常见类型是()。
A．前脱位
B．后脱位
C．外侧方脱位
D．内侧方脱位
E．半脱位
