題目列表(包括答案和解析)
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
Over the past decades, sea ice _____ in the Arctic as a result of global warming.
A. had decreased B. more than C. attach D. apply
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 .
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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