上颌窦癌较为有效的治疗方案为()
A．手术治疗
B．放射治疗
C．化学治疗
D．手术治疗A放射治疗
E．手术治疗A化学治疗
参考答案：D
一个平角=______度；一个周角=______度．
—Excuse me, would you mind answering a few questions?
—Well, I don’t know．I’m in rather a hurry ________．
A．seriously
B．eventually
C．actually
D．distinctly
