The doctor preferred to resign rather than be accused publicly of infamous conduct.

A．unknown

B．extraordinary

C．mysterious

D．disgraceful

上颌骨折诊断中最有决定意义的症状是

A．几个牙齿折断或错位

B．面部肿胀

C．鼻孔大出血

D．脑震荡

E．上颌骨出现动度并错胎