题目

--- May I use your dictionary? I need to look up a word.    --- It’s over there.         .    A. It depends  B. Got it C. Feel free      D. No problem   答案：C18、只用一种试剂不能鉴别的一组溶液是（　　）A、BaCl2CuSO4Na2SO4B、HClNaOHNaClC、NaClNaNO3Na2SO4D、HClAgNO3Na2SO4