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    【题目】学习溶液后，甲、乙、丙、丁四位同学讨论对溶液的理解，其中正确的是（ ）

    A.甲：40mL酒精跟60mL水混合一定得到100mL溶液

    B.乙：1克蔗糖在10克水中完全溶解，所得溶液的质量为11克

    C.丙：盐水是溶液，糖水是溶液，两者混在一起，既有糖又有盐，则不是溶液

    D.丁：CaO溶于水形成澄清石灰水，其溶质是CaO，水是溶剂

    【答案】B

    【解析】

    试题分析：A.酒精和水的分子间的间隔不同，当酒精和水混合后，分子相互嵌入，使混合后溶液的总体积小于两者的分体积之和，A错误；B.溶液质量=溶质质量+溶剂质量，因1克蔗糖完全溶解于10克水中，故正确；C,一种溶剂里可溶解多种溶质，所以，盐水和糖水溶液混合后仍然是溶液，其中食盐和糖是溶质，水是溶剂，故C错误；D.氧化钙溶于水和水反应生成氢氧化钙，因此，澄清的石灰水中溶质是氢氧化钙，溶剂是水，D错误。故选B

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