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【单选题】
食盐、食醋、纯碱等均为家庭厨房中的常用物质，利用这些物质，你能做成功的家庭小实验是①检验自来水中的氯离子②鉴别食盐和纯碱③探究鸡蛋壳是否含碳酸盐④除热水瓶中的水垢（ ）A.
①②③④
B.
①③
C.
②④
D.
②③④
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