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    精英家教网 > 高中英语 > 题目详情
    In the past decades, sea ice _____in the Arctic as a result of global warming.
    A．had meltedB．has been melting C．meltedD．is melting
    B
    考查时态。In the past decades通常都与现在完成时连用或者现在完成进行时连用。句意：在过去的几十年里，由于全球变暖，北极海冰一直在融化。
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