Science and technology have____in important ways to the improvement of agricultural production.应该用contributed还是attached?

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• science and technology have important ways to the improvement of agricultScience and technology have____in important ways to the improvement of agricultural production.
• Science and technology have____in important ways to the improvement of agricultural production.应该用contributed还是attached?
• Science and technology have____in important ways to the improvement of agricultural production.
• Science and technology have ___A_____ in important ways to the improvement oA) attachedB) assistedC) contributedD) witnessed为什么不能选A?
• In that way have science and techdogy changed the wordld we live?Give examales怎么用英文解答?