题目

向HCl、AlCl3混合溶液中逐滴加入NaOH溶液，生成沉淀的量随NaOH溶液加入量的变化关系如图所示，则下列离子组在对应的溶液中一定能大量共存的是 A. M点对应的溶液中：K+、Fe2+、SO42-、NO3- B. N点对应的溶液中：K+、NH4+、Cl-、CO32- C. S点对应的溶液中：Na+、SO42-、HCO3-、NO3- D. R点对应的溶液中：Na+、SO42-、Cl-、NO3-According to the French government, the main body and two bell towers of Notre Dame Cathedral (巴黎圣母院) in time.A. is savedB. are savedC. was savedD. were saved