题目

My little sister likes musicvery much. She plays the violin /'mju:zɪk/every day. 答案：【1】music将铁粉加入到一定量AgNO3、Cu(NO3)2的混合溶液中，充分反应后过滤，向滤渣中加入稀盐酸发现有气体逸出，则滤渣的组成为A．铁B．铁和铜C．铁和银D．铁、铜、银