Unit2 Working the Land Integrated skills 课件-2023-2024学年高中英语牛津译林版（2020）选修第一册

Unit 2 Working the land Integrated skills (I) Organic farming is the process of growing plants or produce without using industrial chemicals. Chemical farming is the process of growing plants and produce using chemical pesticides and fertilizers. Organic food is grown without the use of synthetic (人工合成) chemicals, such as human-made pesticides and fertilizers, and does not contain genetically modified organisms (GMOs). Organic foods include fresh produce, meats, and dairy products as well as processed foods such as crackers, drinks, and frozen meals. Leading in Step 1 We know that most vegetables in the market are from chemical farming, while the vegetables I grow are from organic farming. Leading in Step 1 We know that most vegetables in the market are from chemical farming. What do you know about it? Step 2 1. Read for the main idea of each paragraph. Step 2 1. Read for the main idea of each paragraph. Para 1 Para 2 Para 3 Para 4 Introduction Advantages of chemical farming Disadvantages of chemical farming Conclusion Step 2 2. Read for the details. (1) Why do farmers use chemicals? (2) What are the disadvantages of using chemicals in farming? Because the use of chemicals brings immediate results, in terms of both plant growth and protection. They not only pollute the environment, but also affect all living organisms including humans. Step 2 3. Summarize the advantages and disadvantages of chemical farming. Advantages Disadvantages It pollutes the environment as well as affects all living organisms; it leads to a range of diseases and causes severe damage to humans. It allows plants to grow faster than they would with organic fertilizers; it easily protects crops from pests. Step 2 4. Read for attitude. (1) What’s the author’s attitude to chemical farming? (2) How about your attitude to chemical farming? Objective Approving Indifferent Neutral Opposed Step 3 1. Underline key words before listening. B1 Step 3 B2 1. Pay