—Where're the teachers?

—Sorry, I've no idea. Maybe they are having a meeting in _____ TV room.[ ]

A. student's      

B. students'      

C. the student's    

D. the students'

获得广告批准文号可以在大众传媒进行广告宣传的药品是（）。

A.医疗机构制剂

B.非处方药

C.处方药

D.第二类精神药品