Over the past l00 years,sea levelsteadily as a result of global warming.A.had increasedB.has been in

题目简介

Over the past l00 years,sea levelsteadily as a result of global warming.A.had increasedB.has been in

题目详情

Over the past l00 years,sea level      steadily as a result of global warming.
A.had increasedB.has been increasingC.increased D.is increasing
题型:单选题难度:偏易来源:不详

答案

B
考查时态,句意:在过去的100年中,作为地球变暖的结果海平面一直在稳定的上升。可知本句描述的是现在已完成的一直在进行的动作,故用完成进行时态。选B。

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