①采用汉姓 ②穿汉服 ③学习少数民族语言 ④同汉人通婚
They are________ different sizes, shapes and metals, but they are exactly the same________.
以下这些属于情绪快乐的是( )①喜出望外 ②忧心忡忡 ③眉开眼笑 ④草木皆兵