问题详情:
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
【回答】
C
知识点:现在完成进行时及其被动式
题型:选择题
问题详情:
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
【回答】
C
知识点:现在完成进行时及其被动式
题型:选择题