《Unit1EatingAroundtheWorld.ppt》由会员分享，可在线阅读，更多相关《Unit1EatingAroundtheWorld.ppt（12页珍藏版）》请在三一文库上搜索。
1、,Unit 2 of New Senior English for China Students Book 4,By Yuan Xirong from NO.2 High School,Chemical or Organic Farming,Really bad luck ?,How did this happen?Finish doing the exercises on the textbook.What does the listening text want to tell us?How do you feel after listening?,Listening,What is ch
2、emical farming?Chemical farming is growing crops by using some chemical fertilizers.What is organic farming?Organic farming is growing crops without using any chemical fertilizers.What problems would chemical farming cause?It can cause damage to the land and peoples health.,Skimming,Scanning,Why do
3、some farmers prefer chemical farming?Why do some farmers prefer organic farming later?How did people change their way of farming?,这稻穗, 够分量！,我国杂交稻高产新组合创世界一流亩产 达1195.2kg,He seeks the _ of the rice to solve the world starvation.,quantity,We cant seek quantityat the cost of _,quality,Change 1: Using ani
4、mal waste instead of chemical fertilizers.Change 2: Changing the kind of crop in each field every few years.Change 3: Planting crops with different lengths of roots.Change 4: Planting grass between crops and leave it in the ground.,Should we completely ban chemical fertilizers?Why or why not?How should we farm our land?,quantity,quality,combine,Change is future .Change is the way out.Change is key to success.,