鼻咽癌的好发部位是（）。
A.鼻咽顶壁
B.咽隐窝
C.咽鼓管圆枕
D.梨骨后缘
E.上述都不是
参考答案：B
We found ourselves ____ more and more eagerly to the coming sports meeting.
A．looking back
B．looking forward
C．looking up
D．looking down
登高作业要做好哪些安全事项？
