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Over the past decades, sea ice in the Arctic as a result of global warming.A. had decreased B. decre

编辑:chaxungu时间:2026-04-27 03:06:14分类:高中英语题库

【题目】Over the past decades, sea ice _____ in the Arctic as a result of global warming.

A. had decreased B. decreased C. has been decreasing D. is decreasing

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【答案】C

【解析】