He had to put his shoes lightly, _____ he? [ ]
A. didn't
B. did
C. had
D. hadn't
答案:A
不属于火邪致病特点的是()
A.易于动血
B.耗伤阴津
C.其性上炎
D.易于生风
E.善行数变
简述电视字幕的种类。