开展人才工作的中心环节是
A．培养人才 B．尊重人才 C．吸引人才 D．用好人才
参考答案：A,C,D
By the end of next year，they ________ the work on the new stadium.
A．would have completed
B．had completed
C．will have completed
D．have completed
标准成本按期适用期分为（）。
A.理想标准成本
B.正常标准成本
C.现实标准成本
D.基本标准成本
