__________________(尽管科学已做出巨大努力) in making food more fit to eat, it has, at the s

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问题 __________________(尽管科学已做出巨大努力) in making food more fit to eat, it has, at the same time, made many foods unfit to eat.

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答案 Although science has made great efforts

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【B1】[br]【B6】A、includingB、consistingC、makingD、takingA空格前面是“管理委员会”，空后是商人、政治家