2. 公务员
  3. Over the past decades, ice______in the Arctic as a result of global warming.

Over the past decades, ice______in the Arctic as a result of global warming.

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问题 Over the past decades, ice______in the Arctic as a result of global warming.
选项 A、had decreased
B、decreased
C、has been decreasing
D、is decreasing
答案C
解析 本题考查动词的时态。由“over the past decades”可知，北极冰雪减少的情 况从过去持续到现在，并将持续下去，因此用现在完成进行时。
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