To improve efficiency the factory________most of its workers with robots.

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问题 To improve efficiency the factory________most of its workers with robots.

选项 A、operated
B、replaced
C、contributed
D、accomplished

答案B

解析 为了提高效率,工厂用机器人替换了大多数工人。本题考查动词词义辨析。operate意为“操作”;contribute意为“贡献”;accomplish意为“完成”;replace意为“替换,代替”,符合句意,故选B。
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