待验药品库是属于（）.
A．执业药师
B．黄色区
C．50M2
D．药品零售药店
E．处方调配
参考答案：B
I didn't know he came back ________ I met him in the street. [ ]
A. since
B. when
C. until
D. after
矿泉水的水质有要求吗？
