下列物质不能使品红溶液褪色的是[ ]
A．氯气
B．硫化氢
C．二氧化硫
D．过氧化钠
答案：B
Before the child went to bed,the fater asked him to ________ all the toys he had taken out.
A．put off
B．put up
C．put away
D．put out
配合饲料生产许可证（）的，应当在15日内向发证机关申请补发。
A、注销
B、吊销
C、损毁
D、届满
