1、 Unit 4 Global warmingWarming up they cannot be renewed.Step 2 Pre-listeningRead Exercise 1 together:1. Read the statements below and tick the ones you agree with.2. Listen to the tape and answer and decide which statement Professor Chen doesNOT agree with.1. Well have to stop using fossil fuels.2.
2、About 90% of the worlds energy comes from fossil fuels.3. We can replace fossil fuels with renewable sources of energy.4. Nuclear power is a good source of energy.5. In the future, well need new technologies to replace fossil fuels.6. Its the developed countries who are to blame for producing most o
3、f the carbon dioxide.3. Listen again and tick the phrases that Professor Chen uses to agree or disagree with Li Bin.Slide showExactly. Im afraid I disagree with you.Thats true. Im afraid not.Thats right. I dont think so.Thats correct. No way.I agree. I dont agree.4. Listen for the third time and fil
4、l in the blanks.1 Our modern _ societies depend on the energy we get from_.2 Its a very _ and cheap form of energy.3 Cant we just _ fossil fuels with _ sources of energy like sun or wind power?4 However, whatever we do, we have to do it as a _.5 The _ countries are really the ones to _.Keys:1industrial; fossil fuels 2. concentrated 3。replace；renewable 4。global community5developed；blameStep 3 Homework1. Review the new words and expressions you learned in this class.2. Preview Reading.