下列哪种剂型不属于液体药剂研究的范围（）
A.滴耳剂
B.滴鼻剂
C.滴眼剂
D.滴牙剂
E.洗耳剂
参考答案：C
With the farmer ______ the way, we got to the village before dark. [ ]
A. leads
B. led
C. having led
D. leading
下列瓣膜病，出现水冲脉的是（）
A.肺动脉瓣狭窄
B.二尖瓣狭窄
C.二尖瓣关闭不全
D.主动脉瓣狭窄
E.主动脉瓣关闭不全
