证明黑洞有热辐射的人是（）
参考答案：霍金
Peter is better _____ English than any _______ her classmates.
A．for; other of
B．at; other of
C．for; of
D．at; of
筛漏斗的内界为()
A．筛泡
B．中鼻道
C．上颌窦开口
D．额隐窝
E．额骨鼻突
