Only when he read the newspaper _____ the US President Obama would deliver a speech in his

university. [ ]

A. he knew          

B. he had known      

C. had he known  

D. did he know

管理者对要实现的目标和应采取的行动方案做出选择和具体安排，包括分析外部环境和内部条件、确定目标、制定战略和作业计划、制定决策程序活动，称为管理的( )职能。

A．计划
B．组织
C．领导
D．控制