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  3. Farmers armed with powerful fertilizers and high-tech equipment are growing enormous quantities of corn and wheat, most of which

Farmers armed with powerful fertilizers and high-tech equipment are growing enormous quantities of corn and wheat, most of which

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问题 Farmers armed with powerful fertilizers and high-tech equipment are growing enormous quantities of corn and wheat, most of which is processed and refined to be tastier and more convenient ______is less nutritious.
选项 A、but
B、or
C、while
D、whereas
答案A
解析 根据句意可知，玉米小麦经加工精制后变得更加可口、方便，但是营养成分就少了些。本句含有句意转折，所以排除B项。转折词后显然省略了it。while与whereas都可作为连词表示“尽管；然而”，用于比较或对比两个事实，即只在两者对比的情况下使用，而本句中转折前后的主语不变，所以排除C、D项。but作为连词，是可以表示针对同一主语的句意转折的，故选A。
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本试题收录于： A类竞赛（研究生）题库大学生英语竞赛（NECCS）分类
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