Science and technology have in important ways contributed to the improvement of agricultural production.
A．contributed toB．resulted fromC．carried offD．handed over
A
四個(gè)選項(xiàng)分別表示導(dǎo)致、緣自、帶走和上交，根據(jù)題意選A，科學(xué)技術(shù)應(yīng)經(jīng)在一些重要方面導(dǎo)致了農(nóng)業(yè)生產(chǎn)的提高。
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