将下列各组物质放入水中,生成白色沉淀,加入过量稀硝酸,则沉淀消失并有气泡产生,然后滴入AgN03溶液,又生成白色沉淀.则这组物质是( )
A、<img src="//wximg.233.com/attached/image/20130110/20130110171122542254.jpg" alt="" border="0" />B、<img src="//wximg.233.com/attached/image/20130110/20130110171155425542.jpg" alt="" border="0" />C、<img src="//wximg.233.com/attached/image/20130110/20130110171269556955.jpg" alt="" border="0" />D、<img src="//wximg.233.com/attached/image/20130110/201301101712007979.jpg" alt="" border="0" />
物理化学综合