福建省邵武市第七中学高二英语课件：Unit 4 Global warming.ppt

3. Which of the following is TRUE according to the text? A. The temperature of the earth increased about one degree Fahrenheit during the 20th century. B. The carbon dioxide content in the air increased by 70 parts per million from 1957 to 1997. C. All scientists accept the data in graph 2 except Charles Keeling. D. Janice Foster says that more carbon dioxide will make plants grow faster. A 4. The author probably agrees that ________A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about the effects of global warming. D True or false? 1. The temperature in the last century did not seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes that she can measure the future global rise in temperature. T T F 4. The rise in carbon dioxide is causing a steady increase in global warming. 5. George Hambley believes that global warming will do good rather than harm to the earth. 6. It is clear what the effects of global warming will be. T T F Summary Try to talk in general terms rather than in details. e.g.: I learnt that the earth is becoming warmer. I learnt that global warming could have terrible effects on the environment. … A : We shall do something about global warming. B: We shall do nothing about global warming. Debate What we should do to protect our earth? Discussion: 1. Reduce the burning of fossil fuels 2. Plant trees 3. Use bags that can be recycled … It is a rapid increase when compared to other natural changes. compare vt. 1)比较; 对照 compare…with…表示“把……与……相比 (同类相比)” 如： Compare your answers with those at the back of the book to see if they are right. 把你的答案同书后面的