题目

室温下，下列事实不能说明NH3•H2O为弱电解质的是 A．0.1 mol•L﹣1 NH3•H2O溶液的pH小于13 B．0.1 mol•L﹣1 NH4Cl溶液的pH小于7 C．相同条件下，浓度均为0.1 mol•L﹣1 NaOH溶液和氨水，氨水的导电能力弱 D．0.1 mol•L﹣1 NH3•H2O能使无色酚酞试液变红色 答案：DThe children's excitement as Christmas drew near．A． grows B．tried C．trying D． had grown