题目

 After the war, a new school building was put up ___________there had once been a theater. A. that    B. where C. which    D. when 答案：B8．下列各组物质混合后，如其中的酸过量时，有沉淀生成的是（　　）A．氯化钾、碳酸钠、硫酸B．硫酸铜、氢氧化钠、盐酸C．氯化钡、硝酸银、硝酸D．氯化铁、氢氧化锌、硝酸