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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
C
解析
考查时态。句中有Over the past decades谓语动词用现在完成时或现在完成进行时。
核心考点
试题【Over the past decades, sea ice _______ in the Arctic as a result of global warmi】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
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题型:不详难度:| 查看答案
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----Oh, I _____ that. Sorry, I won’t again.
A.don’t knowB.didn’t knowC.won’t knowD.haven’t known

题型:不详难度:| 查看答案
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