当总需求小于总供给时，中央银行会倾向于选择( )。
A．在公开市场上买进债券
B．在公开市场上卖出债券
C．提高贴现率
D．提高存款准备金率
参考答案：A
_______ for the excellent work he has done in education, Mr Bright is going to give us a talk this
Wednesday night. [ ]
A. known
B. having known
C. has been known
D. is known
