操作练习的一般程序按（）进行。
A、操作假想
B、操作准备
C、操作实施
D、操作讲评
参考答案：A
One Friday, we were packing to leave for a weekend away（）my daughter heared cries for help.
A. after
B. while
C. since
D. when
治疗血虚发热的代表方剂是（）
A.补中益气汤
B.四君子汤
C.四物汤
D.当归补血汤
E.归脾汤
