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    11．Be sure to take a trip to the waterfall       it's a long drive on a dirt road．It's well worth the trouble．（　　）
    A．only ifB．now thatC．even thoughD．in case

    分析 即使要在土道上行驶很长的路程，也一定要去瀑布旅行，这个麻烦是很值得的．

    解答 答案C．only if"只要"，引导条件状语从句；now that"既然"，引导原因状语从句；even though"即使，尽管"，引导让步状语从句；in case"万一"，引导条件状语从句．分析可知"        it's a long drive on a dirt road"和"Be sure to take a trip to the waterfall"之间是逻辑上的"让步"关系，故只能用从属连词even though来引导从句，故答案选C．

    点评 本题考查从属连词的用法．连词的用法辨析，要注意分析主从句之间的逻辑关系，再确定相应的连词，同时注意不同的连词的语义及用法区别．

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