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 公司总裁说,新技术使他们的生产效率有了根本性地提高。radically根本地;彻底的;完全的。violently猛烈地,激烈地;暴力地。severely严格地;严厉地;严重地。extremely极端;极其,非常。violently,severely,extremely与此句语境不搭。
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