Farming had been profitable on the Great Plains for many decades, but by 1938 (i

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问题 Farming had been profitable on the Great Plains for many decades, but by 1938 (i)______ agricultural practices and years of inadequate precipitation had (ii)______the land.

选项

答案 C,E

解析 but说明前后反义重复;and说明前后同义重复。第二空与profitable(赚钱的)反义重复。sustain维持,denude使……光秃,fertilize使肥沃。答案选E。(i)——agricultural practices与years of inadequate precipitation同义重复,都是对土壤不好的东西。shrewd机敏的,conscientious仔细的,imprudent不明智的。答案选C。
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