单项选择题
We are not ______ a position to accept your offer. A.at B.on C.of D.in
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
单项选择题 It is important that you ______ sports every day. A.have B.would have C.must have D.will have
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