高中英语（M4）教学资料-U2 oganic farming胡.ppt

金榜27-28检测 homework 校本4 限时训练 Listening This is the VOA Special English Agriculture Report. Agricultural scientists in Switzerland have demonstrated论证 the _________ effects of organic farming methods. Organic farms use no man-made _________ to increase crops or control insects and disease. The study showed that _______ fields produced fewer crops, on average, than other fields. However, the scientists say the organic ________ improved the_______ of the soil and used half as much energy. Main idea of the passage Chemical fertilizers can cause many problems, so organic farming is becoming more popular. ORGANIC FARMING Structure of the text I using chemical fertilizers for a long time can hurt the land and also people’s health II Problem caused by chemical fertilizers 1. Damage the land by killing the helpful bacteria and pests as well as the harmful ones 2. Lead to cancer or other illness. 3. Food grown with chemical fertilizers look beautiful, but inside there is usually more water than vitamins and minerals. Ⅲ Organic farming is becoming more popular with some farmers and many customers after these discoveries came out. IV Other methods to keep the soil fertile. Part 4. I. 1. build up 2. lead to 3. long-term use of… 4. focus on 5. every few years 6. turn to 7. keep…free from 8. cause damage to 9. be washed off 10. avoid damaging the environment or people’s health II. ABCCB CDAAB AC III. 完型：1-5. BDBCA 6-10. DABCB 11-15 AABCA CHEMICAL OR ORGANIC FARMING? Unit 2 Using Language (P.14) How much do you know about Yuan Longping? Look at the title and picture and predict the content. What do we put on the soil to makes crops grow better ? It is fertilizer. How many kinds of fertilizers do farmers use ? There are two kinds. They are chemical fertilizers and natural ones. Which kind of fertilizer do farmers use when they are doing