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一、在每小题列出的四个选项中 ,只有一项是最符合题目要求的。农业生产技术的进步 ,是农业生产的重要内容和农业变革的巨大动力。据此回答 1～ 3题。1.在农业生产中 ,最早知道用草木灰来肥田提高粮食产量的是A .夏、商、周三代 B .春秋时期C .战国时期 D .秦汉时期2 .有
One of the four options listed in each question is the one that best meets the requirements of the title. The progress in agricultural production technology is an important content of agricultural production and a huge driving force for agricultural reform. Answer 1 to 3 questions accordingly. 1. In agricultural production, the earliest to know that using plant ash to fertility to improve food production is A. Summer, Shang and Zhou B. Spring and Autumn Period C. Warring States Period D. Qin and Han Dynasties