摘要：Science and technology have in important ways to the improvement of agricultural production.A. attached B. assisted C. contributed D. witnessed[解析]C本题考查动词短语.contribute to means: 促成,有助于,对...有贡献.in important ways放在contribute to 之间.增加了题目的迷惑性.
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Science and technology have ____in important ways to the improvement of agricultural production.
A. attached B. assisted C. contributed D. witnessed
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