题目内容
18、
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
试题答案
18、C。 ks5u
解析：考查时态。句中有Over the past decades谓语动词用现在完成时或现在完成进行时。 ks5u
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
查看习题详情和答案>>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
查看习题详情和答案>>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 .
查看习题详情和答案>>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
查看习题详情和答案>>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
查看习题详情和答案>>
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
查看习题详情和答案>>
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
查看习题详情和答案>>