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课件网) Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment? Section C 学习目标： 1. 掌握四会词：acid, nuclear, biogas, technology, straw, renewable, disadvantage , process, require, maglev, German, wheel, guide, steel, sunlight, steam, , electric, best-know, per, efficient, path, wave, deep ,source, worldwide, run out. 2. 综合复习所学环保词汇用法及表达自我观点与建议的句型。 3. 了解现代科学技术在环境保护方面的作用。 acid rain 酸雨 nuclear adj.原子能的;核动力的 [?nju?kl??] biogas n.沼气 technology n.技术 [tek?n?l?d?i] straw n.禾杆，稻草 [str??] renewable adj.可更新的,可再生的 disadvantage n.不利因素;障碍 [d?s?d?vɑ?nt?d?] process n.步骤,过程v.加工,处理 [?pr??ses] require v.需要;要求 [r??kwa??] best-known 最知名的 maglev train 磁悬浮列车 German n.德国人;德语 [?d???m?n] per prep.每，每一 [p?] wheel n.轮，车轮，轮子 [hwi?l] guide n.向导，导游；指南，手册 [ga?d] path n.道路;途径 [pɑ?θ] steal n.钢，钢铁 [st??l] wave n.挥手;海浪v.招手;摆手 [we?v] deep adj.深的adv.深深地 [di?p] use up 用完,耗尽 worldwide adv.全世界,世界各地 [?w??ldwa?d/ ] steam n.水蒸气,蒸汽;水汽 [sti?m] remove v.去除,使消失;移开 [r??mu?v] replace v.代替,取代 [r??ple?s] dry adj.干燥的v.弄干 [dra?] insect n.昆虫 [??nsekt] bite v.咬;叮 [ba?t] planter n.种植园主 ['plɑ:nt?] Are you a greener person? How can we become a greener person? Turn off the lights when we leave a room. Walk or ride a bike instead of taking a bus or a taxi. Take a cloth bag when we go shopping. Don’t drive a car if you travel a short distance. Write on both sides of the paper. Don’t use the things that can be used only once. After we wash faces, we can use the water to wash clothes. Turn off the TV set while we are away. … It’s an electric car. It works well, but it’s slow and can’t run for long. electric (adj.) — electricity (n.) Do you know them? Do you know it ? It’s a maglev train. Its advantages are quiet, fast and clean, but it’s too expensive. 磁悬浮列车 n.技术 Do you know it ? China is one of the first countries in the world to use biogas technology . 沼气 1a Read and understand. Look at the pictures. Do you know what they are? Choose the right picture for each paragraph. paragraph 2 paragraph 3 Paragraph 4 1b Read 1a and match the words with the pictures on Page 48. A. acid rain B. nuclear energy C. biogas A C B adj.原子核的， 原子能的 酸雨 Read Paragraph 1 again, and then mark True (T) or False (F). ( ) It’s good that people produce power from coal. ( ) Nuclear power is dangerous. So we can’t use it. ( ) To solve the energy problem, people all over the world are looking for new ways to produce power. T F T Paragraph 1 Paragraph 2 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 v.需要，需求 require 有两种用法： *require (doing) sth. 表示主语“ ... ...
