1. greenhouse

2. What is the greenhouse made and used for?
A greenhouse is made of glass and is used for growing plants, especially during cold weather.

4. greenhouse gases

6. What’s greenhouse effect?

7. greenhouse effect

8. Unit 4
Global Warming

9. Scanning Read the text quickly and find the answer to the questions:
1.Who wrote the magazine article? What is the name of the magazine?
2.What are the names of the three scientists mentioned in the article?
Sophie Armstrong, Earth Care.
Dr Janice Foster, Charles Keeling, George Hambley.

10. 3. What do they think about global warming
3. What do they think about global warming? Do they agree with one another?
They don't agree with each other.
Dr. Janice Foster thinks the effects of global warming could be very serious.
George Hambley thinks global warming will be mild with few bad environmental consequences.
Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide.

11. 4. What are the two graphs about?
5. What is the main topic of the article?
The first graph shows the temperature increase of one degree Fahrenheit between 1860 to The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1977.
Global warming/ the warming of the earth.

12. Skimming
Read the passage carefully and judge whether the statements are true or false.
1. The temperature last century didn’t increase much.
2. Everyone believes that global warming is caused by the activities of humans.
3. Janice Foster believes that global warming is caused b the burning fossil fuels.
4. Natural gas is a greenhouse gas.
5. Carbon dioxide is a byproduct of burning fossil fuels. F F T F T

13. 6. People accept Charles Keeling’s data because he took accurate measurements.
7. Flooding could be one of the effects of future global warming.
8. George Hambley believes scientists are just guessing about the effects of global warming.
9. George Hambley is worried about the effects of carbon dioxide on plant growth.
10. It is clear what the effects of global warming will be. T T T F F

14. Detailed reading
How many parts can the text be divided into?

15. 1 2 4 5 10 11 Part (Para_ to Para_ ) Main idea Part 1 (Para _____ )
introduce a debate over the issue of global warming
Part 2
(Para ___to___)
illustrate how global warming comes about
Part 3
(Para ___ to ___)
list two different attitudes among scientists towards global warming
Part 4
It’s up to readers to think and decide whether people should do something about global warming or not. 1 2 4 5 10 11

16. Debate
Get into groups of six. Decide which three in your group are going to agree with the statement and which three are going to disagree with the statement .
Group A : We shall do something about global warming.
Group B: We shall do nothing about global warming.

17. Instructions Group A discuss why they agree with the statement;
Group B discuss why they disagree.
Group A and B get together. Tell each other the reasons why agree or disagree with the statement.