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    11．The new D-type trains can run at speedsof 200 to 250 kilometres hour. The trip from Shanghai to Beijing only takes 10 hours now. [哈尔滨市] A. a B. an C. the [答案]B.[解析] 考查冠词用法.hour第一个音素为元音音素.故前不能加a. 【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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