尖锐湿疣是由 __________ 感染引起。皮损活检有 __________ 具有特征性。
参考答案：人 * * 瘤病毒（HPV）凹空细胞
— What's wrong with your iPad? The sound _____ is not clear.
— Yes. It has been broken for some time. [ ]
A. come out
B. coming out
C. to come out
D. came out
治疗眩晕虚证的主穴方是（）。
A.风池
B.肝俞
C.肾俞
D.百会
E.足三里
