患侧整个上唇及鼻底完全裂开为（）
A.唇隐裂
B.Ⅱ度腭裂
C.完全性腭裂
D.完全性唇裂
E.Ⅲ度腭裂
参考答案：D
As soon as I was on________, I began to have second thoughts about leaving.[ ]
A. abroad
B. broad
C. aboard
D. board
天然气脱除的（）经回收装置生产出优质硫磺。
A、CO2
B、H2S
C、CH4
D、N2
