28.C细节理解题。根据第一段“,.,many took it as a means to protect the environment.”可知答案。
29.D、细节理解题。根据第二段“Steven Eato understands such idealists(理想主义者)and he was oneofthem about a decade ago.”及本段的其他细节可知,Steven Eaton在法学院读书时也是一个理想主义者。
30.B细节理解题。根据第七段“But if you're going to stick with it,and expect to make a living at it,you'vegot tobe realistic about the business aspects,.,”可知,Steven Eaton希望年轻人对农场的经营应该务实些,
3l.A,推理判断题。根据最后一段“That sense of farming as a practical form of idealism is probably thebiggest thing the young people have to learn.”可推断,作者认为Steven Eaton的建议还是很接地气的。