题目内容

关于骶管的描述，正确的是

A. 是骶前孔相连而成
B. 是骶后孔相连而成
C. 是骶管裂孔相连而成
D. 是骶椎的椎孔相连而成
E. 是椎间孔相连而成

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骶管神经麻醉的部位和须摸认的体表标志是

A. 骶前孔，骶骨岬
B. 骶管，骶骨岬
C. 骶管裂孔，骶角
D. 骶后孔，骶角
E. 以上都不对

骶骨和髋骨均有的结构是

A. 粗线
B. 月状面
C. 耳状面
D. 弓状线
E. 髋臼

I dream of becoming a professional singer, but my voice was _____________.

A. not good enough
B. not enough good
C. good not enough

We expect our employees to ______________ for face-to-face communication with clients around the world.

A. speak enough English
B. speak English enough well
C. speak English well enough