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    精英家教网 > 高中英语 > 题目详情
    Tick bites（蜱虫叮咬）are reported _______ in 12 provinces and claimed 31 lives since 2007.
    A．to break outB．to have broken out
    C．to be broken outD．to have been broken out
    B
    考查非谓语动词。break out爆发，不及物，故不用被动。根据语境事情已经发生，故用完成时，选B。
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