0.49÷0.12=4…1______．
1＞0.12，余数＜除数，所以0.49÷0.12=4…1是错误的．
故答案为：×．
研末冲服，不入煎剂的药物是（）。
A.鸡内金
B.龙骨
C.琥珀
D.牡蛎
E.三七
The Smiths are having dinner at home at the moment.
A．Mr. Smith
B．Mrs. Smith
C．The Smith family
D．Mr. Smith and his son
