今年政府工作报告指出：“我国是统一的多民族国家，各民族都是中华民族的平等一员。”要全面正确贯彻党的民族政策，坚持和完善民族区域自治制度，促进民族团结进步、共同繁荣发展。”我国处理民族关系的原则是
①民族平等    ②一国两制    ③民族团结     ④各民族共同繁荣 

选词填空。

    Vienna，both the capital city of Austria and the centre of____classical music．is a beautiful old city on the River Danube．In the eighteenth century,lots of____came to study and work there．Among them，three composers____Johann Strauss(the father and the son)and Mozart were very famous．Mozart could play the piano and the violin before six．His family____him around Europe to give concerts and he wrote____of pieces of music．

图中所示的是（）