《人教课标版.pptVIP

ORGANIC FARMING Organic farming is simply farming without using any chemicals. 1. Why are chemical fertilizers so popular in farming today? 2. What problems can be caused by using chemical fertilizers? 3. What is organic farming ? 4. What is the main reason for using organic farming methods? Chemical fertilizers can cause many problems, so organic farming is becoming more popular. I using chemical fertilizers for a long time can hurt the land and also people’s health II Problem caused by chemical fertilizers 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. Language points 1. lead to用法 [寓词于境] 阅读下列句子，注意lead to的意思和用法。 1. His carelessness led to the accident. 2. This test is obviously bad because it leads to incorrect learning. 3. Too much work and too little rest often leads to illness. [自我归纳] lead to意为“_________________”, 后多跟名词或代词。 3. keep… free from “远离”或“避免” Homework Collect some information about the safety and importance of green food. I. 根据下列各句句意及所给单词的首字母或汉语提示，写出所缺单词的正确形式。 1. The new model will go into p________ next year. 2. Because of his poor n_______, he has grown weaker and weaker. nutrition production Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 3. Those countries are rich in _______ (矿物的) resources. 4. New scientific d_________ are being made every day. 5. The group produces a monthly ________ (摘要) of their research. summary mineral discoveries Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. II. 用适当的介词填空。 1. Costs have been reduced __ 20% over the past year. 2. You can focus your telescope ___ that distant television tower. 3. I hope I haven’t kept you ____ your work. by on from Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.