Which of the following is Not considered a characteristic of farming in the late 18th and early 19th centuries?
A、use of artificial fertilizer
B、introduction of new agriculture machinery
C、The "open-field" system
D、a system of croprotation
【正确答案】：C
【题目解析】：本题考查英国18世纪末19世纪初的农业特征。根据课本P122可知，“开放田地”制度在十八世纪末19世纪初就已经被废除了。
