题目

A、B、C、D、E五瓶透明溶液，分别是HCl、BaCl2、NaHSO4、Na2CO3和AgNO3中的一种。已知：①A与B反应有气体生成②B与C反应有沉淀生成③C与D反应有沉淀生成④D与E反应有沉淀生成⑤A与E反应有气体生成⑥在②和③的反应中生成的沉淀是同一种物质    请填空：    (1)在②和③的反应中，生成的沉淀物质的化学式(分子式)是_______________。    (2)A是_______________，B是_______________，C是_______________，D是_______________，E是_______________。    (3)A与E反应的离子方程是_______There are so many beautiful cards in the shop that I don't know _______. A. which one to choose B. to choose which one C. which to choose one D. to choose on which