A:
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D:
In the UK, this is the ground floor. In the US, this is the first floor.
读美国本土图,回答下列问题
下列朝代曾结束分裂割据局面,统一中国的是( )①秦朝 ②北魏 ③西晋 ④北宋 ⑤隋朝 ⑥元朝