你可能感興趣的試題

Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）

A.Use of artificial fertilizer.
B.Introduction of new agricultural machinery.
C.The'Open-field'system.
D.A system of crop rotation.

單項(xiàng)選擇題

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.