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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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题目内容
（请给出正确答案）
to the improvement of agricultural production.
A) attached B) assisted C) contributed D) witnessed
答案
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Science and technology have ___ in important ways to the improvement of agricultural production.
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第10题
Science and technology have ___ in important ways to the improvement of agricultural production.
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