单选题 Colonial copper smithing also _____ in the early eighteenth century and then prospered in northern cities.无
【正确答案】 C
【答案解析】句意:18世纪早期殖民地铜器加工业日益成熟,之后在北方城市繁荣起来。本题考查固定搭配。come of age表示“到法龄,日益成熟”,符合句意,故选C。decline衰退;拒绝。