小红同学在化学实验课上建议用碘水可将淀粉溶液与食盐溶液区别开来这个环节属于�学探究中的a提出假设 b交流评价 c设计实验 D作出 Template




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tomski小红同学在化学实验课上建议用碘水可将淀粉溶液与食盐溶液区别开来这个环节属于�学探究中的a提出假设 b交流评价 c设计实验 coloring