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作为发展中国家，我国粮食增产的有效途径是（　　）

A、大面积开垦荒地,扩大种植面积

B、增加农业补贴,提高化肥和农药施用量

C、科技兴农,走可持续发展的道路

D、引进市场机制,发展订单农业

时间：2021-07-17 20:33 关键词：学历教育成人高考 2012年成人高考高起点《历史地理》模拟预测卷(1)

答案解析

C

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