A:H2CO3⇌2H++CO32﹣
B:CH3COOH═CH3COO﹣+H+
C:AgCl═Ag++Cl﹣
D:NaHCO3═Na++H++CO32﹣
老师在介绍某处原始文化遗址时出示了这几张图片,此文化遗址是( )
A. Why are you sad?
B. Because I got a kitten.
C. Because I did my homework very slowly.
我国现阶段制定一切方针政策最基本的依据是()