22．The new D-type trains can run at speeds of 200 to 250 kilometres hour．The trip from Shanghai to Beijing only takes lo hours now．A．a B．an C．the 【查看更多】

 

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The new D-type trains can run at speeds (速度)of 200 to 250 kilometres       hour．The trip from Shanghai to Beijing only takes lo hours now．

A．a                         B．an                       C．the

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