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 decreas
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解决时间 2021-01-20 08:24
- 提问者网友：风月客
- 2021-01-20 00:51
最佳答案
- 五星知识达人网友：动情书生
- 2019-07-22 06:56
A. had decreasedB. decreased(答案→)C. has been decreasingD. is decreasing解析：考查时态和语态。句意：在过去几十年，由于全球的暖化，北冰洋的冰块在不断减少。根据句意及时间状语Over the past decades，可以确定decrease动作从过去就开始了一直持续到现在而且还很有可能持续下去，故使用现在完成进行时，故选C。
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- 1楼网友：患得患失的劫
- 2021-01-14 02:30
谢谢解答
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