Unit 5 Working the Land Using Language (II) 课件-2023-2024学年高中英语人教版（2019）选择性必修第一册

Jan. 17th, 2024 Jane UNIT 5 WORKING THE LAND Using Language and writing Learning Objectives Understand the meanings of chemical farming and organic farming. Know the advantages and disadvantages of them. Express opinions on them, and write an argumentative essay . Lead in Chemical Versus Organic Farming While-reading Read the text, and answer the questions: 1. What is chemical farming? Chemical farming is farming using chemical pesticides and artificial fertilizers. 2. What is organic farming? Organic farming is simply farming without using any chemicals. Read the text, and then answer the questions. 1 1. Why did many farmers welcome the introduction of chemical farming? 2. What concerns many people about the use of pesticides? 3. What is one problem with the use of chemical fertilisers? Many farmers welcomed them as a great way to fight crop diseases and increase production. Their long-term use can sometimes harm both the land and people’s health. Crops grown with them usually grow too fast to be rich in nutrition. 4. How is organic farming different from chemical farming? 5. Why do organic farmers change the kind of crop grown in a field every year? Organic farming is simply farming without using any chemicals. Organic farmers focus on keeping their soil rich and free of disease through natural means. Different crops are grown because they put important minerals back into the ground, making it ready for the next batch of crops. Then complete the sentences in the table. 2 Para. Main idea Detail 1—2 Pesticides can kill helpful _____________________. Some pesticides have been __________ because of the ________________. Crops grown with chemical fertilisers usually _____________ to be full of _____________. bacteria and insects prohibited damage they cause grow too fast nutrition D Para. Main idea Detail 3 Many organic farmers use ________________________ as fertiliser. 4 They often ___________________