商业银行建立的授信风险责任制中，（）应当承担调查失误和评估失准的责任。
A.调查人员
B.审查人员
C.审批人员
D.放款操作人员
参考答案：A
悦耳动听的笛声是靠管子里的空气________产生的．
--- Look at ______ book on the desk . Is it ______ useful one ?
--Yes, it is . In the book there is much advice on how to learn math well.
A．a, the
B．the, a
C．the, an
D．a, an
