Communities in primitive areas where natural______is scarce must be resourceful in order to secure adequate nutrition.

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问题 Communities in primitive areas where natural______is scarce must be resourceful in order to secure adequate nutrition.

选项 A、education
B、competition
C、sustenance
D、agriculture

答案C

解析 sustenance的意思为“食物,营养”,如:The earth brings forth large cropsevery year for the sustenance of man and beast.(大地每年生产出大量的农作物,供人畜食用。)句意:在天然食物匮乏的原始地区,各个部落的人们必须富于机智才能获取足够的营养。故选C。其他三项分别意为:education教育,培养;competition比赛;agriculture农业。
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