Unit 4

Global Warming

What is it ? Is it renewable ?

What is it ? Renewable ?

What ? Renewable?

A nuclear power plant. ( 原子能发电站）

Non-renewable.

Solar panels.( 太阳能接受器）Renewable

A hydro-electric dam.( 水坝） renewable

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)

• 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.

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?

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.

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 __________.

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

Just imagine !

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.

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.

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

• 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.

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.

Homework

• Prepare the language points of this passage and underline the important ones.

• After remembering the vocabulary, do the exercise on Page 28.

So much for this !

• Thank you !