We are not ______ a position to accept your offer.
   A．at      B．on        C．of        D．in

典型硬脑膜外血肿患者的早期瞳孔变化是( ) A．同侧散大 B．对侧散大 ...

单项选择题典型硬脑膜外血肿患者的早期瞳孔变化是(    )
   A．同侧散大  B．对侧散大  C．双侧散大  D．同侧缩小    E．不等圆

It is important that you ______ sports every day. ...

单项选择题It is important that you ______ sports every day.
     A．have          B．would have        C．must have         D．will have

皮下气肿是下述哪种疾病的特征( ) A．闭合性气胸 B．开放性气胸 ...

单项选择题皮下气肿是下述哪种疾病的特征(    )
   A．闭合性气胸    B．开放性气胸
   C．张力性气胸    D．血气胸
   E．多发性肋骨骨折