西周时“一人跖（踏）耒而耕，不过十亩”；战国时“一夫挟五口，治田百亩”。引起这一变化的根本原因是（）_刷题宝

题干

西周时“一人跖（踏）耒而耕，不过十亩”；战国时“一夫挟五口，治田百亩”。引起这一变化的根本原因是（）

A：公田变为私田

B：铁器牛耕的推广

C：国家走向统一

D：封建制度的确立

上一题下一题 0.0难度选择题更新时间:2015-07-27 02:34:55

答案(点此获取答案解析）

B

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