11．Farming and nature are like two flowers on the same tree．When farming （61）goes （go） against nature，all kinds of environmental problems are the result．In ancient times，when people began using the land，farming was not（ 62）what it is today．Early farmers moved around the country．They burnt a part of a forest and used this land for one or two years．When they could no（ 63）longer （long） grow crops on the land，they moved on and repeated this somewhere else．Agriculture in this way destroys nature and results（ 64）in floods and droughts （干旱）．
Over the past thirty to thirty-five years，farmers （65）have recognized （recognize） some old truths，already known to ancient Chinese farmers．Farming should not go against nature．If the soil is too poor，chemicals can help improve （66）it and grow better crops，but this may damage or destroy land（ 67）surrounding （surround） the farms．Instead，farmers should look for other methods．In the early 16th century，brothers Tan and Xiao Zao of Jiangsu Province bought fields along lakes at（ 68）a lo price nobody wanted because they were too wet．They built dikes （堤壩） around the fields turning the fields （69）into fish ponds and they became fish farmers．They also planted fruit trees on the dikes and kept chickens and ducks．They were very（70）successful （success） farmers．
