The scientists have worked out ______. (一种可以大规模提高农业生产的方法) a method by which the

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问题 The scientists have worked out ______. (一种可以大规模提高农业生产的方法)

选项

答案 a method by which the agricultural production can be raised on a large scale

解析本题测试带介词的定语从句和单词agricultural，raise，词组On a large scale的用法。

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Thescientistshaveworkedout______.(一种可以大规模提高农业生产的方法)amethodbywhichthe