管理学狭义的研究对象不包括( )。
A．管理对象
B．管理的各种功能或职能
C．管理原理
D．管理者
参考答案：A
债券收益率与基础利率之间的利差反映了投资者投资于非国债的债券时所面临的额外风险，即风险溢价。()
—Where is your father? We haven't seen each other for weeks.
—______. [ ]
A. He has gone to England
B. He is going to America
C. He would visit my grandparents
D. He has been to America
