By the time the police came to rescue the old woman, she _______for four days under the house.

A．buried

B．had buried

C．had been buried

D．has been buried

经批准可以在大众传播媒介上进行广告宣传的是

A．处方药

B．非处方药

C．医疗机构配制的制剂

D．新药

E．注射剂