应当与诊疗范围相适应并凭医师处方调配的是（）。

A.医疗机构配制的制剂

B.医疗机构购进的国产药品

C.医疗机构购进的进口药品

D.常用药品和急救药品

E.医疗机构向患者提供的药品

It was ____ exciting news that more than ten students in a single school were admitted to Tsinghua University in the same year.

A．one

B．an

C．/

D．a