题目

下列各组离子在水溶液里能大量共存，但用盐酸酸化后，不能大量共存的是A. Na+、K+、Cl－、S2O32-                                                                 B. Al3+、K+、CO32-、SO42-C. Al3+、Cl－、NO3－、NH4+                                                          D. Fe3+、K+、NO3－、SO42- Will you call ________ at the supermarket for some eggs and milk? [　　] A．forB．in C．outD．down