— Could I talk with you right now? I have something urgent.

— If you _____, please come to my office. [ ]

A. can

B. may

C. must

D. should

下列关于热疮说法错误的是

A．热疮常在发热前发生

B．发生在皮肤黏膜交界处

C．是一种急性疱疹性皮肤病

D．相当于西医的单纯疱疹

E．特点是皮损为成群的水疱，有的互相融合，多在1周后痊愈，易于复发