In the past decades, sea ice _____in the Arctic as a result of global warming.A.
题型:不详难度:来源:
In the past decades, sea ice _____in the Arctic as a result of global warming.A.had melted | B.has been melting | C.melted | D.is melting |
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答案
B |
解析
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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