河南省平顶山市汝州市九年级英语上册 Unit 2 Saving the Earth Topic 3 What can we do to protect the environment Section C课件 （新版）仁爱版.ppt

Unit 2 Saving the EarthTopic 3 What can we do at home to protect the environment? Section C Are you a greener person? 1a Read and understand. Look at the pictures. Do you know what they are? Choose the right picture for each paragraph. 1b Read 1a and match the words with the pictures on Page 48. 1c Read 1a again and complete the table. coal dirty, acid nuclear energy dangerous electric vehicles the sun, the wind andCO2protect the environment, save energy, small maglev train German-built, quiet, quick, no wheel noise, energy-efficient, not pollute the air biogas technology – straw, grass and animal waste, everyday lives, require, the high cost German 2a Read the passage below and match the pictures with the sentences. Then discuss in detail the use of one energy source. The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year. 2a Read the passage below and match the pictures with the sentences. Then discuss in detail the use of one energy source. Sunlight can produce a lot of energy. People began to use the energy from the sunlight in different ways many years ago. We can use it to warm the house in the winter, to heat the water for baths, and to produce electricity. What’s more, we can even use it to run vehicles directly in the near future. As is known to us, the energy from the sunlight has a lot of advantages. For example, it is clean, renewable and non-polluting. Besides, it does no harm to our nature. So we’d better use it as much as possible. * paragraph 2 paragraph 3 Paragraph 4 A. acid rain B. nuclear energy C. biogas A C B adj.原子核的， 原子能的 酸雨 Its key disadvantage is that the process requires a long time (up to 30 days )and the cost is high.它最大的缺陷是生产过程需要很长时间（长达30天）和成本高。 process n.步骤，过程 v.加工，处理 require