The chairman of the company said that new techniques had______ improved their production efficiency.

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问题 The chairman of the company said that new techniques had______ improved their production efficiency.

选项 A、violently
B、severely
C、extremely
D、radically

答案D

解析副词辨析 radically 表示“根本地；本质地；彻底地；极端地”；extremely 表示“极(端)；非常；极其”。从此句所谈的内容看，D最合适。

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大学英语四级

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