【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
在线课程【答案】C
【解析】
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
在线课程【答案】C
【解析】