某学习小组讨论辨析以下说法:①粗盐和酸雨都是混合物;②沼气和

某学习小组讨论辨析以下说法:①粗盐和酸雨都是混合物;②沼气和石油都是可再生能源;③冰和干冰既是纯净物又是化合物;④不锈钢和目前流通的硬币都是合金;⑤盐酸和食醋既是化合物又是酸;⑥纯碱和熟石灰都是碱。上述说法正确的是()

A、①②③④    B、①②⑤⑥    C、③⑤⑥    D、①③④

答案

D

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