单项选择题
A.Use of artificial fertilizer. B.Introduction of new agricultural machinery. C.The'Open-field'system. D.A system of crop rotation.
Which of the following statements is NOT true?（）A.The o...
单项选择题Which of the following statements is NOT true?（）
A.The open field system provided a good opportunity to experiment. B.The open field system wasted land. C.The open field system was wasteful of labor and time. D.The open field system made livestock farming difficult.
Traditional farming involved the open field village,a s...
单项选择题Traditional farming involved the open field village,a system that dated back to the（）century.
A.4th B.5th C.6th D.7th
The Peasant Uprising of 1381 did not direct against（）A....
单项选择题The Peasant Uprising of 1381 did not direct against（）
A.the rich clergy B.the lawyers C.the landowners D.the town traders
