冲裁模按结构可分哪几类？
参考答案：
简单模；
带导柱模；
复合模。
I had no idea she was there. I met her only____. [ ]
A. as a result
B. in surprise
C. by chance
D. in a way
颞骨纵行骨折主要损伤（）
A.迷路
B.中耳
C.外耳
D.内听道
E.耳蜗
