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Over the past decades, sea ice ______ in the Arctic (北极) as a result of global w
Over the past decades, sea ice ______ in the Arctic (北极) as a result of global w
游客
2025-03-12
25
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问题
Over the past decades, sea ice ______ in the Arctic (北极) as a result of global warming.
选项
A、had decreased
B、will decrease
C、has been decreasing
D、is decreasing
答案
C
解析
本句考查时态。A项是过去完成时,C项是现在完成进行时。句首的时间状语Over the past decades意思是“过去的数十年间”,再结合句意讲的是北极的海洋冰川由于全球变暖而变少了,常识告诉我们冰川依然在递减,所以不能用过去完成时,因此选C。
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