A:astonished; astonished
B:astonishing; was astonished
C:astonishing; astonished
D:astonished; was astonished
分离氯化钾、氯化铜、碳酸钙的混合物,在不引入新杂质的条件下,可以依次加入的一组试剂是 ( )
8×9=()9×8=()} 口诀:____