以下是溴灼伤处理方法，其顺序为：①送医院②立即用大量水洗③用乙醇擦至灼伤处为白色。（）
A.②③①
B.②①③
C.③②①
D.①②③
参考答案：A
Mark has come in his raincoat and boots, _____ for rain.
A．preparing
B．prepared
C．to prepare
D．prepares
