（2019新教材）外研版高中英语必修三英语Unit6 Developing ideas P68-70 ppt课件.ppt

1、Unit6 Nature in words P68 P68 Developing ideas Activity 1 Look at the infographic below and answer the questions. Facts about DDT: DDT was first produced in 1874 and was later used as pesticide. It stays in the environment. It is highly poisonous to living organism, including humans. Now banned in m

2、any countries, it is still used in some for malaria(疟疾) control. Notes： 1. pesticide 杀虫剂 2. poisonous poison 3. ban n.v. a ban on smoking ban sb. from doing 4. contamination pollution contaminate pollute 弄脏，污染，毒害 5. consume 消费；吃，喝 6. filter 渗透；过滤 7. spray 喷雾，喷洒 P68 Developing ideas Activity 1 Look a

3、t the infographic below and answer the questions. 1 How does DDT reach the human body in the food chain? When DDT is sprayed onto plants in order to kill insects, it is absorbed by the plants and later consumed by animals; humans in turn eat those animals. DDT also leaks through the soil and into ri

4、vers and lakes, where it contaminates fish consumed by humans. 2 What harm does DDT cause? DDT is highly poisonous to living organism, including humans. Activity 2 Read the book review on Silent Spring, a book that led to the banning of DDT. Predict what will be mentioned in the passage. It is a boo

5、k review on Silent Spring, so the following parts may be mentioned in this passage: Now read the passage and check your prediction. 1) basic information about the book, including the author, year of publication, theme and main idea; 2) the reason why this book is published; 3) features of the writin

6、g; 4) comments on this book; 5) influence of this book. Carefully reading Para1 Notes： 8. a book review 9. stillness n. 宁静，沉静 10. puzzled half a century later it remains a book that deserves to be reread today, so that we can once again feel ourselves warm to the fire of its passionate message. For

7、unless we do listen to Rachel Carsons warning, one day we may wake up to the strange and quiet horror of another silent spring. Activity 3 Organise information from the passage and complete the notes about Silent Spring. 1 1962 2 the damaging effects of human activity 3 more responsible, limited and

8、 carefully monitored 4 scientific information, examples and research 5 beautiful and elegant 6 The pesticide industry 7 defend her claims 8 The use of DDT 9 Presidential Medal of Freedom 10 environmental awareness Think & Share 1 Why was Silent Spring so successful? Silent Spring was so successful b

9、ecause it alerted the general public to the dangers of DDT. It planted important new ideas in the public mind, such as that spraying chemicals to control insect populations has an impact on other wildlife, and that the chemicals got into the food chain. 2 What is the moral lesson behind “A Fable for

10、 Tomorrow”? The moral lesson is that financial profit should not come at the expense of the environment and the creatures living in it. Think & Share 3 Why did some people challenge Carsons findings? Some people challenged Carsons findings because they were concerned about the negative impact they w

11、ould have on business in the pesticide industry. Think & Share 4 In what different ways do First Snow and Silent Spring raise peoples awareness of nature? First Snow shows the beauty of natureand in particular the snowthrough its words and imagery, while Silent Spring describes an unnatural spring without the beauty of birdsong. They each raise peoples awareness of nature by highlighting the interplay between nature and human behaviour. Think & Share