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    【题目】能保持二氧化硫化学性质的最小粒子是( )。

    A．氧原子 B．硫原子

    C．氧原子和硫原子 D．二氧化硫分子

    【答案】D

    【解析】

    试题分析：保持物质化学性质的最小粒子是分子，所以能保持二氧化硫化学性质的最小粒子是二氧化硫分子。

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