TOEFL Reading: ETS-TOEFL阅读机经 - 97S3B0Z5J35XXV04L$

According to paragraph 2, regional farmers did all of the following to improve food production in Europe EXCEPT: A. They improved the way they raised farm animals. B. They used both the sickle and the scythe to harvest crops. C. They grew special crops that nourished the soil. D. They created more farmland by draining swamps.