如图,梨状孔的上部为()
A.上颌骨额突
B.筛骨垂直板
C.腭骨突起
D.鼻骨
E.额骨鼻突
参考答案:D
—What's the man _____?
— I don't know.[ ]
A. talking
B. waiting
C. taking
D. listening