Agricultural changes in the late 18th century Britain were caused by the following EXCEPT__________ .
A、the Enclosure Acts
B、Robert Bakewell’s selective breeding
C、small farms cultivated on the “open-field”
D、new agricultural machinery invented by JethroTull
【正确答案】：C
【题目解析】：18世纪的农业变革是圈地运动、选择繁殖和农业机器所引起的，不是由传统的开放式农田制引起的。
