Any decline in the number of game birds was due to______habitat, over-grazing and th loss of heather moorland.

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问题 Any decline in the number of game birds was due to______habitat, over-grazing and th loss of heather moorland.

选项 A、deteriorated
B、deteriorating
C、deteriorate
D、deterioration

答案A

解析 句意:任何猎禽数量的减少都要归因于栖息地的恶化,过度放牧和石南沼泽地的减少。deteriorate退化,恶化。分析句法结构,此处动词过去分词表示被动完成。
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