摘要：1512] Folk music has been from one generation . [译文] 民歌一代一代地传下来. A. past over; to the other B. passed down; to another C. passing out; to others D. passed away; to one [答案及简析] B. pass down / on 传给,pass away 消逝,pass over 省略,pass out昏厥.

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