题目

如图是某同学构建的关于所学的物质A的知识络。 (1) 物质A的化学式是。 (2) 由物质KMnO4制取物质A的化学方程式为。 答案:【1】O2 【1】2KMnO4 加热__ K2MnO4+MnO2+O2↑ Rewrite the sentence without changing the sentence meaning. (同义句转换。) A:People believe that man will be able to live on the moon one day. B:________ ________ ________ ________ man will be able to live on the moon one day.
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