题目

The old farmer has one son and two daughters, ________are kind to him, which makes him sad. A . neither of them B . all of whom C . none of them D . none of whom 答案：D向5OmL1mol/L的Al2(SO4)3溶液中加入一定量的金属钠，充分反应后，对该溶液的分析合理的是①可能析出另一种有金属光泽的固体 ②可能无沉淀析出③可能有7.8g沉淀析出 ④可能析出3.9沉淀A. ②③④ B. ③④ C. ①③ D. ①②③④