题目

Across the river _____.    A. lie a new built bridge                   B. lies a newly built bridge    C. a new built bridge lie                   D. a newly built bridge lies 答案：B有①KOH  ②CuSO4  ③ MgCl2    ④ NaCl四种溶液，不用任何其他试剂，就可以将其一一区别，先后鉴别出的物质顺序是（　　）Ａ、①②④③　 Ｂ、②③①④    Ｃ、②①③④　　Ｄ、①②③④