Unit 19 Modern Agriculture教案

(weather, places, water & other natural sources)
question: if we changed the structure of agriculture, what do you think will happen to the nature?(we will produce less or maybe we can’t get any food at all.)
2) while listening
1 listen to the tape. the passage you hear talks about
( t ) history of farming             (  ) farmers in america        (  ) fishing
 ( t ) protection of nature           ( t ) farmers in china           (  ) pigs
 ( t ) environmental problems       ( t ) trees                      ( t ) dikes
2 which of the following sentences are true & which are false?
1) in early times farmers in china moved around & burnt forests.       (  t  )
2) all farmers in south america burn forests to create farmland.        (  f  )
3) flood & droughts are disasters that farmers cannot stop.            (  f  )
4) some of the land in china is too wet to grow crops.                 (  t  )
5) fish farmers damage nature.                                   (  f  )
3 listen to the tape & complete the sentences by using your own words. 
when farming goes against nature, all kinds of environmental problems are the result. the earliest farmers destroyed nature. their way of agriculture led to floods & droughts. it is an old truth that farming should not go against nature. the land that tan & xiao zao bought was too wet & could not be used for farming. instead they changed the fields into fishponds. on their farm they kept fish/ducks/chickens & grew fruit trees. 
3) post listening
suppose you are tan & xiao zao. because of your successful farming on the field, you are invited to a big meeting that many local farmers will attend. you are asked to give a lecture about your experience telling how you have worked on the nearly deserted field & become a successful farmer.