—_____ is he?
—He is my teacher. [ ]
A. Who
B. What
C. How
答案:A
A.既省力又省功
B.只省功不省力
C.只省力不省功
D.既不省力也不省功
急性根尖周炎最有效的应急处理是()
A.局麻镇痛
B.安抚镇痛
C.患牙调牙合镇痛
D.开髓、根管引流
E.服用消炎镇痛药