—Hi, Mary. __________?

—Not so well. I can’t keep up with the other students.

A．How long have you studied chemistry

B．Who is teaching you chemistry

C．How is your chemistry study going

D．Where are you learning chemistry

关于鼻咽纤维血管瘤不正确的是（）

A.鼻出血或口中吐血是其主要症状

B.多发生于30岁以上的男性

C.是鼻咽部最常见的良性肿瘤

D.手术是其主要治疗方法

E.肿瘤可引起一侧或双侧鼻塞