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题目
题型:不详难度:来源:

Over the past decades , sea ice          in the Arctic as a result of global warming .
A.had decreasedB.decreased C.has been decreasing D.is decreasing .

答案
 D
解析

此题考查动词时态,由句中的时间状语从句“over the past decades”,可知句子的谓语动词要用现在完成时或现在完成进行时态。
核心考点
试题【Over the past decades , sea ice          in the Arctic as a result of global war】;主要考察你对动词及动词短语辨析等知识点的理解。[详细]
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