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1、Unit 4 Global WarmingSave the earth!Work in groups -list things as required:1. Things that use energy around us or at any other places, (ie. light)2.Sources of energy (ie. coal)Warming up I ( m ) Things that use energy around us or at any other places:In a houseThings that use energySources of energ
2、y lights television cassette player computer fridge stove washing machine hairdryer video recorder coal oil natural gas wind (power) sun (solar energy) Water (hydro-electric power) the sea ( tidal energy) uranium (nuclear energy) plant waster(biomass energy)Windmills, renewable.What? Renewable?Warmi
3、ng up II ( 5 m )What? What kind? Renewable?A coal power station, non-renewable.What? What kind? Renewable?An oil refinery (精炼厂), non-renewable.What? What kind? Renewable?A nuclear power plant, non-renewable.What? What kind? Renewable?A hydro-electric dam, renewable.Geothermal (地热的) Energy Plant Coal
4、 Oil Natural gas Uranium Wind (wind power) Sun (solar energy) Water (hydro- electric power) Plant waste (biomass energy) Hot springs or geysers (geothermal energy) The sea (tidal energy)Fossil fuelsNon-renewableRenewableWhat are fossil fuels? Ancient animal and plant material below the surface of th
5、e earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non- renewable energy because once they are used they have gone forever; they cannot be renewed.What about the weather?9 / 14We needPre-reading ( 3m )The sun.How about the plant
6、s?If lack of solar energy, the plantsGreenhouseGreenhouse gases! What are greenhouse gases? Whats greenhouse effect?Lets see the following picture about it.Global WarmingReadingRead the passage again to find out the answers to the questions in Ex.1Reading I scanning (5m)1.Who wrote the magazine arti
7、cle? 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. There are some very different attitudes among scientists towards this issue. Some think the effects will be te
8、rrible, while some others believe that we should not worry about it.3. What do they think about global warming? Do they agree with one another? The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmos
9、phere from 1957 to 1977. Global warming / the warming of the earth4. What are the two graphs about?5. What is the main topic of the article?Read the passage carefully and judge whether the statements are true or false?FTReading II-skimming (5m)TFTTHow many parts can the text be divided into? Tips: P
10、art 1 (para _) Part 2 (para _ to _) Part 3 (para _ to _) Part 4 (para _ to _)Reading III-detailed reading (8m)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 Reading IV (3m)2
11、. “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 statemen
12、t about the election. D. The magazine has 12 issues each year.B 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 eff
13、ects of global warming.D The different ideas between Dr. Janice Foster that B. that; that C. what; what D. that; what 2. Is it in the factory _ this type of cars are produced? A. which B. where C. that D. / 3. Is it the factory_ this type of cars are produced ? A. which B. where C. that D. /4. _ on
14、Monday night that all this happened? A. Is it B. It is C. Was it D. It was 5. It was _ the old worker came that we _ the experiment. A. until; didnt begin B. not until; began C. until began D. not until; didnt begin 6. It is I _ singing in the garden. A. who are B. who is C. that am D. that is7. -Why didnt you answer when I spoke to you in the street this morning?-I _ but you didnt hear me. A. did answer
