Unit 4 Global warming Period 1 Warming Up & Reading 文本研读课,. 根据汉语提示及课文语境写出正确的单词 1. Make a list of the things that _ (消耗) energy in your home, school, or any other places you can think of.,consume,2. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a _ (随意的)but natural _(现象). 3. All scientists _ (赞同)to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy.,random,phenomenon,subscribe,4. The problem begins when we add huge _ (大量的)of extra carbon dioxide into the atmosphere. 5. It means that more heat energy _ (倾向)to be trapped in the atmosphere causing the global temperature to go up.,quantities,tends,6. On the one hand, Dr Foster thinks that any _ (趋势)in which the temperature increases by 5 degrees would lead to a catastrophe. 7. On the other hand, there are those, like George Hambley, who are _ (反对)to this view and believe that we should not worry about high levels of carbon dioxide in the air.,trend,opposed,8. They predict that any warming will be _(温和的) with few bad environmental _(结果). 9. In fact, Hambley _(说), “More carbon dioxide is actually a positive thing. ” 10. It will encourage a greater _ (范围)of animals all of which will make life for human beings better.,mild,consequences,states,range,. 补全短语 1. come _ 发生, 造成 2. _ to 同意, 赞成; 订购 3. quantities _ 大量的 4. go _ 上升, 增长; 升起 5. _ in 导致 6. be _ to 反对,about,subscribe,of,up,result,opposed,7. _ if 即使 8. keep _ 继续 9. _ than 而不是 10. due _ 由于, 因为,even,on,rather,to,. 阅读导引 1. 了解全球变暖的相关知识并搜集身边全球变暖的证据, 为理解课文做铺垫。 2. 阅读课文并标出文中与全球变暖所导致的后果相关的词和句子。,Step 1 Leading in . What can you learn from the following pictures?,From the pictures we can know something about 1. _, that is to say, the earth is becoming 2. _. It has caused some disasters. For example, 3. _are rising and ice is 4. _ and many animals are left 5. _. 6. _activities on the earth are partially to blame for it.,global warming,warmer and warmer,the ocean levels,melting,homeless,Human beings,. Discussion. If global warming continues, human beings and animals _in the future.,will die out/disappear,Step 2 Fast Reading Skim the text and sum up the main idea of each paragraph. Para. 1 A. the cause of the earths becoming warmer Para. 2 B. the consequence of burning fossil fuels Para. 3 C. the increase of carbon dioxide,Para. 4 D. global warming will go on Para. 5 E. puzzles about global warming Para. 6 F. different attitudes to global warming Para. 7 G. an introduction to the passage 答案: Para. 1G Para. 2A Para. 3B Para. 4C Para. 5D Para. 6F Para. 7E,Step 3 Careful Reading . Read the text carefully and finish the following tasks. 1. The first graph in the text is used to_. A. attract readers attention B. introduce the topic of global warming C. act as an example D. support the opinion and make it more convincing,2. Who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997? A. Dr Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstrong.,3. According to the text, which of the following statements is NOT true? A. Carbon dioxide is a byproduct of the burning of fossil fuels. B. All the scientists agree that the burning of more and more fossil fuels leads to the increase of carbon dioxide.,C. If we stop adding carbon dioxide and other greenhouse gases from now on, the temperature will stop going up. D. It is still not clear what the effects of global warming will be.,4. The author probably agrees that_. A. global warming is good for us B. we can do nothing about global warming C. catastrophes will happen if the globe keeps on warming D. much remains to be found out about the effects of global warming,5. What is mainly discussed in the text? A. Carbon dioxide. B. Water vapour. C. Gases in the atmosphere. D. Temperature increase.,. Read the text carefully and answer the following questions. 1. Who wrote the magazine article? What is the name of the magazine? _ _,Sophie Armstrong wrote the magazine article. The,name of the magazine is Earth Care.,2. What does Graph 1 in the text show? _ _,Graph 1 shows the temperature increase of one degree,Fahrenheit between 1860 and 2000.,3. What do scientists think about global warming? Do they agree with one another? _ _ _ _,There are some very different attitudes among scientists,towards this issue. Some think the