绞窄性斜疝局部有感染者，应选 A．疝囊高位结扎术 B．Bassini修补术 C．Ha

脊髓亚急性联合变性症状主要表现_______。

取口腔上皮细胞的准确部位是口腔内侧壁．______．

I wonder ____ made your English teacher so angry in her class this morning.

A   what was it that  B how was it that  C what it was that  D how it was that

玄明粉为下列哪种药材的饮片( )

A．朱砂

B．雄黄

C．信石

D．石膏

E．芒硝

入口车道系统基本功能有（）

A、人工判断车型

B、输入车牌号码

C、写卡

D、预收通行费