题目

下表中，除去物质所含杂质的方法正确的是                               （） 选项物质所含杂质除去杂质的方法 ACu(NO3)2溶液AgNO3溶液加入适量的铁粉，过滤 BKNO3 溶液Ba(NO3)2滴加过量K2SO4溶液、过滤 CCO2气体CO气体点燃 DNaCl固体泥沙加水溶解、过滤、蒸发 答案：D________ you have a good chance, you might as well as make full use of it. [　　] A．BecauseB．ForC．WhenD．Now that