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Take a taxi , _____ you'll miss your train .

A. and    B. if     C. otherwise      D. or

C


解析:

祈使句可用来取代if从句来表示评论、提出要求、发出忠告或威胁等。用祈使句比用if从句表达更强的紧迫性。在表示评论和要求时,其连词用and,表示忠告时用连词otherwise,表示威胁时,用连词or。例如:Fail to pay and they will cut off the electricity .

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C

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