某同学设计了如下一组实验取四朵用石蕊试液染成紫色的干燥纸花分别按如图所示进行实验.回答下列问题1察到纸花的颜色变化是Ⅰ纸花变红Ⅱ Template




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tomski某同学设计了如下一组实验取四朵用石蕊试液染成紫色的干燥纸花分别按如图所示进行实验.回答下列问题1察到纸花的颜色变化是Ⅰ纸花变红Ⅱ coloring