Unit 2 Topic 2 Section C课件2022-2023学年仁爱科普版英语九年级上册

Unit 2 Saving the Earth Topic2 All these problems are very serious. Section C Look and Predict. Read the passage and choose. 5. What is the best title for this passage ? A. Environment Problems B. Pollution on the Earth C. Hope for the Future D. The Greenhouse Effect A Choose suitable titles for Paragraphs 2-6. Then write it down in front of each paragraph. A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide 2.What does our planet mean here? A. The sun. B. Mars. C. The moon. D. The earth. D Read Para. 1 and choose. The earth is 4.6 billion years old. We humans have lived on the earth for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we’ve done are very good for the earth while some are bad. Paragraph 1 ___________ All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests