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将下列物质溶于水,能够促进水的电离的是:( )
①NaHSO4②NaHSO3③CH3COOH④CH3COONa⑤NaHCO3⑥NaClO⑦NH4HCO3
A.②④⑤⑥ B. ④⑤⑥⑦ C.①②③ D.②④⑤⑥⑦