题目内容
The world's first metro system was the partially underground Metropolitan Railway in London. ( )
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Shanghai Metro, the world’s longest metro system, is the oldest metro system in China. ( )
The first line in Xi’an runs from east to west. ( )
Line 1 was completed after one year of delay in 2013. ( )
According to the plan, there will be 17 metro lines in Xi'an before 2030, which can service the urban and suburban districts of Xi'an and part of Xianyang. ( )
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