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    精英家教网 > 高中英语 > 题目详情
    Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
    A．whenB．ifC．beforeD．until
    C

    试题分析：连词辨析。A当…时；B如果；C在…前；D直到…才；句意：专家们正在努力制定一个在情况不是很晚的时候处理那个由全球变暖导致的问题的计划。根据句意说明是在情况变晚之前就采取的计划。故C正确。
    点评：连词的词义辨析要放在上下文的语境中进行，要注意上下文的语义的串联以及逻辑关系的推理，特别要注意一些连词和时间状语的固定搭配。
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