下列哪种气体易溶于水,生成硝酸()。
A.氮气
B.二氧化氮
C.瓦斯
参考答案:B
髌骨软化的病变部位为()。
A.骶髂关节
B.髌股关节软骨
C.软骨下骨
D.十字韧带
E.关节囊
As always when she sang in the bathroom, she ______ the high notes in a special way.
A.span out
B.belted out
C.spread out
D.stretch out