A:检验自来水中是否含氯离子
B:鉴别食盐和纯碱
C:检验鸡蛋壳能否溶于酸
D:除去热水瓶中的水垢
Xiao Ming gets up ____ 6: 10 every morning.
—Peter is not himself these days. —Well, could you tell me________?
下列各句中,没有语病的一句是( )