颌面骨中惟一可活动的骨骼是()
A.上颌骨
B.下颌骨
C.颧骨
D.鼻骨
E.额骨
参考答案:B
—Does Peter have a tennis racket?
—_______. But he has some tennis balls.[ ]
A. Yes, he does
B. Yes, he is
C. No, he isn't
D. No, he doesn't