—I'm dead tired. I can't walk any further, Jenny.

—____, Tommy. You can do it.

A．No problem

B．No hurry

C．Come on

D．That's OK.

上颌窦穿刺最适于治疗（）。

A.急、慢性上颌窦炎

B.急、慢性筛窦炎

C.急、慢性蝶窦炎

D.急、慢性额窦炎

E.慢性全鼻旁窦炎