1. Unit 4 Global Warming

2. What is it ? Is it renewable ?

3. What is it ? Renewable ?

4. What ? Renewable?

5. A nuclear power plant. ( 原子能发电站） Non-renewable.

6. Solar panels.( 太阳能接受器） Renewable

7. A hydro-electric dam.( 水坝） renewable

8. Look at the picture below, what is it ？ What is it made of ? What its purpose is ? How it works ?( Find out the answers from page 25)

9. It is a greenhouse; It is made of glass; It is used for growing plants, especially during cold weather. The glass traps the heat from the sun and keeps it from escaping so that plants grow better.

10. Read the passage quickly, answer the following questions: Who wrote the magazine article? What’s the name of the magazine? What are the names of the three scientists mentioned in the article? What are the two graphs about? What’s the main topic of the article?

11. Answers : Sophie Armstrong. “Earth Care”. Dr Janice Foster, Charles Keeling, George Hambley. The first graph shows the temperature of one degree Fahrenheit between 1860-2000. The Second graph shows the carbon dioxide content in the atmosphere from 1957-1997. Global warming/ the warming of the earth.

12. Read the passage again, find out more details. What’s the main idea of the passage? The _________ have different ideas on whether it __________ when the earth is becoming __________.

13. Look at the following two graphs, what can you find ?

15. Just imagine !

17. Divide the passage into three parts and write down the main idea of each part. –Part 1( Para 1): There is a fierce debate over what has caused this global warming. Part 2 (Para 2-5) Some scientists think that global warming could be serious. Part 3 (Para 6) Some think that we should not worry much about global warming. Part 4 (Para 7): No one knows what is the effects of global warming will be.

18. Yes or no? Does Sophie Armstrong support a clear opinion? No. he doesn’t state it clearly. Does George Hambley believe that we should worry much about the global warming? No, he doesn’t.

19. Choices. 1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977? A. Dr. Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstrong. B

20. 2. "But there are some very different attitudes among scientists towards this issue.“ "Issue" here means the same as the one in________. A. I bought the new stamp the day of its issue. B. They are talking about one of the key issues in the election campaign. C. The government is expected to issue a statement about the election. D. The magazine has 12 issues each year.

21. 3. 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.

22. Homework Prepare the language points of this passage and underline the important ones. After remembering the vocabulary, do the exercise on Page 28.

23. So much for this ! Thank you !