对牙齿起固定作用的主要结构是()
A.牙骨质
B.牙髓
C.牙根
D.牙周膜
E.牙槽骨
参考答案:D
某患者,下痢2天,现下痢赤白粘冻,腹痛,里急后重,肛门灼热,小便短赤,舌红苔黄腻,脉滑数。
若身热汗出,脉象急促,主方为()
A.葛根芩连汤
B.荆防败毒散
C.藿香正气散
D.参苓白术散
E.半夏泻心汤
The taxi was held up on the way to the railway station, otherwise I ______ the train.
A.must catch
B.have caught
C.could have caught
D.ought to catch