医院三级管理的药品是
A．麻醉药品B．毒性药品C．精神药品D．贵重药品E．普通药品
参考答案：E
His sister left home in 1998，and ________ since．[ ]
A．had not been heard of
B．has not been heard of
C．had not heard of
D．has not heard of
病程中梅毒传染性最强的是（）
A.潜伏期
B.第Ⅰ期
C.第Ⅱ期
D.第Ⅲ期
E.恢复期
