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    精英家教网 > 高中英语 > 题目详情
    The past two years ________ a sharp rise in oil price, which adds to the burden of auto transportation industry.   
    A．witnessed B．has witnessed C．is witnessing D．witnesses
    B
    考查时态题。根据the past two years可知应该用现在完成时。本句是无生命的东西作主语，此处的the past two years作主语。witness 解释为：见证了。
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