Unit4Globalwarmingwarmingupreading1课件（新人教选修6）.ppt

Words study;an oil refinery;Renewable Energy;trap the heat from the sun;How does this global warming come about?;Skim the article: ;What is the writing style? A. Expositive (说明文) B. Practical (应用文) C. Argumentative(议论文) D. Narrative(记叙文);Look through the main text: ;Match the parts with the main ideas: ;Match the parts with the writing skills: ;★;The 1st graph shows the global t between 1860 and . The temperature i and decreased over this period but on the whole it i by around one degree Fahrenheit. During this time, the earth reached its l temperature in about 1910 and its highest in . There was a steady increase in the temperature during the 20 years after 1980. We can see from the graph that the earth has become w since early last century.;The 2nd graph shows the amount of c d in the atmosphere from to 1997. The CO2 c steadily i over this forty-year period. It went up from 315 to parts p million. ;True or false?( P27 );What do the 3 scientists think about global warming? Do they agree with one another?; The earth is becoming warmer. In your opinion, does it matter? ;Assignment