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Add huge quantities - PowerPoint PPT Presentation

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Lead-in. Which place do you like?. Clean or dirty?. Pure or polluted?. Save or cut down?. Quite or noisy?. ??????. Unit 4 Global Warming. Learning Goals. Knowledge Goals. Topic. . Global warming . Pollution . The importance of protecting the earth. Words and Expressions. Words

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Add huge quantities - PowerPoint PPT Presentation

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