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    精英家教网 > 高中英语 > 题目详情
    _____H7N9 is a deadly virus, it is still safe to eat thoroughly-cooked chicken.
    A．UntilB．WhileC．IfD．Since
    B

    试题分析：考查连词：A. Until直到B. While虽然C. If如果D. Since自从，句意：虽然H7N9是致命的病毒，吃完全烧熟的鸡肉还是安全的，选B。
    点评：这几个词都是连词，要分清每个连词短语的含义和用法，做题时关键看上下文和句意的逻辑关系做题。While的用法有：1.表示“当……的时候”，2.表示让步，意为“尽管”“虽然”。3.表示对比或转折，意为“而”“但是”。
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