unit2usinglanguage[整理].ppt

production n. ____ bacteria n.____ pest n.____ nutrition n.____ mineral n.____ discovery n.____ soil n.____ reduce vt.____ root n._____;;酱钠荷澡管憾健腊阐厢碘诲囊壤突费耙拟坚劲饶账承拿恭稀柒架躁渝凶胞unit2usinglanguageunit2usinglanguage;Unit2 Using language reading Chemical or organic farming?;advantage; With these __________, some farmers and many customers are beginning to turn to organic farming. Organic farming is simply farming without using any chemicals. They _______ on keeping their ______ rich and free of disease. A healthy soil ________ disease and helps crops grow strong and healthy. Organic farmers, therefore often prefer using _______ waste from animals as fertilizer. They feel that this makes the soil in their fields richer in minerals and so more fertile. This also _______ the air, soil, water and crops ______ from chemicals.;Which of the following methods is NOT organic farming? Farmers often change the kind of crop in each field every few years. The farmer is using fertilizers to keep the vegetables free from pests. Farmers plant crops to use different levels of soil Some farmers prefer planting grass between crops to prevent wind or water from carrying away the soil.;;The farmer is selling his/her green food to the customer. What are the advantages of …? The advantages are …? I’d prefer … because … I don’t like… because… I’d rather … It’s more expensive but … nutritious delicious safe health environment;Dialogue: F= Farmer C= Customer F: Good afternoon! Would you like some __________? C: What is the advantage of ____________？ F: The advantage of these vegetables is that___________. C: How much is it? F: __________ a kilo. C: But it’s a little_______! I would rather to buy some cheaper ones. F: Well, let me explain. ______________________. C: Ok. If these organic food __________________, I will buy some. ;carrot;; With the improvement of people’s life, more and mor