单项选择题
He has to go to Canada for the next（）of his training.
A.stepB.standC.pointD.stage
填空题 群体绩效奖励计划主要包括（）和（）。
单项选择题 产品生命周期理论认为对外直接投资应始于产品的（）的时期。
单项选择题 Fifteen engines are scheduled for delivery this week，the remainder （）at a later date.
