Unit 5 Working The Land Reading for writing课件 2023-2024学年高中英语人教版（2019）选择性必修第一册

UNIT 5 WORKING THE LAND Reading for writing Using language---evaluate chemical and organic farming VS Organic farming Chemical farming CHEMICIAL VERSUS ORGANIC FARMING spraying pesticide Chemical pesticides and artificial fertilizers have been in widespread use in farming since the middle of the 20th century. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. Over time, however, what some scientists have found is that their long-term use can sometimes harm both the land and people’s health. Para. 1 Read for structure For example, pesticides can damage the land by… but also helpful ones. In addition, these chemicals … for a long time. This affects the crops … and, in turn, the animals and humans …. In fact, some pesticides like DDT have been prohibited…because of the damage… As for chemical fertilizers, crops…grow too fast to be rich in nutrition. They may look beautiful …, but …more water than essential minerals, and …less flavor as well. Para. 2 3 Chemical pesticides and artificial fertilizers have been in widespread use in farming since the middle of the 20th century. When they were first introduced, many farmers welcomed them as a great way to fight crop disease and increase production. Over time, however, what some scientists have found is that their long-term use can sometimes harm both the land and people’s health. Para. 1 Read for structure For example, pesticides can damage the land by… but also helpful ones. In addition, these chemicals … for a long time. This affects the crops … and, in turn, the animals and humans …. In fact, some pesticides like DDT have been prohibited…because of the damage… As for chemical fertilizers, crops…grow too fast to be rich in nutrition. They may look beautiful …, but …more water than essential minerals, and …less flavor as well. Para. 2 4 Retell Para.1-2 As an alternative, some farmers have switched to organic farming, and many customers have turned