某同学设计了一套验证二氧化碳与水能否反应的实验他首先用紫色石蕊试纸浸泡滤纸晒干后折成纸花然后按如图所示分别进行1在b实验中当加入 Template




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tomski某同学设计了一套验证二氧化碳与水能否反应的实验他首先用紫色石蕊试纸浸泡滤纸晒干后折成纸花然后按如图所示分别进行1在b实验中当加入 coloring