Which of the following statements is NOT true?（）<br>A:The open field system provided a good opportunity to experiment.<br>B:The open field system wasted land.<br>C:The open field system was wasteful of labor and time.<br>D:The open field system made livestock farming difficult.

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.

出自：00522《英语国家概况》

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