题目内容
5000多年前，中国人把贝壳当作钱来使用。随着冶金技术的发达，金属货币开始在中国流通。Chinese ____ money, qian, 5,000 years ago.______ metallurgy, ____ started to ____.
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这些铜铸钱，来源于中国人民的生产生活。出现了由农具演变的布币，由渔具和刀演化而来的刀币等。These copper coins_____ Chinese people’s daily _____. Spade-shaped coins came from farming tools and ____ came from fishing gear and knives.
而在中国古代流通时间最长的是以帝王年号未标志的通宝钱。黄金、白银、粮食、纺织品都曾在中国古代作为钱使用。The Tong Bao coin symbolizing the titles of emperor’s reigns were ______ in the history of China. Gold, ____, food and ____ were once used as qian in China.
直到1000多年前，出现了中国最早的纸币，交子。如今在中国使用的是第五套人民币。他在外观和技术上都有改进。The earliest paper money, named jiaozi, came out in China more than 1,000 years ago. Now the banknotes circulating in China is the 5th ____ of renminbi. The ____ and printing techniques _____ over the years.
1.独立基础和筏板基础下垫层在软件中选( )垫层类型定义更智能？
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