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In the past few years, sea ice in the Arctic as a result of global warming.A.had

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In the past few years, sea ice in the Arctic as a result of global warming.A.had

In the past few years, sea ice ____ in the Arctic as a result of global warming.

A.had meltedB.has been meltingC.meltedD.is melting

试题答案

B

解析试题