In the past few years, sea ice ____ in the Arctic as a result of global warming.
题型:不详难度:来源:
In the past few years, 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。根据in the past few years可知是与完成时连用的,在根据句意是指海冰一直都在融化。所以使用现在完成进行时。句意:在过去几年里,因为全球变暖,海冰一直在融化。 |
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