题目

从B栏中选出A栏中对应的答句。A（____）1．Can you skate on the ice?（____）2．What do you like to do in summer?（____）3．Who is he?（____）4．What did you do yesterday?（____）5．What are you going to do tomorrow?BA．He is Santa.B．I like to swim in the sea.C．I ate an ice cream.D．Yes, I can.E．I am going to fly kites. 答案：【答案】1.D 2,B 3.A 4.C 5.E 【解析】略分类是学习化学的方法之一，下列物质按纯净物、混合物的顺序排列的是(　　)A. 氦气、二氧化碳 B. 空气、蒸馏水C. 冰水共存物、红磷 D. 五氧化二磷、加碘食盐