Unit 6 Nature in words Developing ideas课件-2022-2023学年高中英语外研版（2019）选择性必修第三册

　UNIT 6　 Nature in words --- Developing ideas 1. Students could learn to memorize some words and phrases. 2. Students could get the main idea of this passage. 3. Students could write sentences about this topic. Learning Aims: 新单词短语 puzzled /ˈpʌz(ə)ld/ adj. 困惑的，无法理解的 * backyard /ˌbækˈjɑːd/ n. 后院 * moribund /ˈmɒrɪbʌnd/ adj. 垂死的， * tremble /ˈtremb(ə)l/ v. 颤抖，发抖 * throb /θrɒb/ v. 生机勃勃；热闹 chorus /ˈkɔːrəs/ n. 合唱曲 * robin /ˈrɒbɪn/ n. 知更鸟 * catbird /ˈkætbɜːd/ n. 猫鹊 * dove /dʌv/ n. 鸽子 * jay /dʒeɪ/ n. 松鸦 * wren /ren/ n. 鹪鹩（一种褐色小鸟） * marsh /mɑːʃ/ n. 沼泽，湿地 New words! 新单词短语 * fable /ˈfeɪb(ə)l/ n. 寓言 * alert /əˈlɜːt/ v. 提醒，使（某人）意识到 * knowingly /ˈnəʊɪŋli/ adv. 故意地 dozen /ˈdʌz(ə)n/ number 一打；许多 thorough /ˈθʌrə/ adj. 仔细的；缜密的 precise /prɪˈsaɪs/ adj. 精确的；一丝不苟的 launch /lɔːntʃ/ n. 推出，发起 * posthumous /ˈpɒstjʊməs/ adj. 死后获得的 * marine /məˈriːn/ adj. 海洋的 reputation /ˌrepjʊˈteɪʃ(ə)n/ n. 名誉，名望 elegance /ˈelɪɡəns/ n. 优美；简洁 passionate /ˈpæʃ(ə)nət/ adj. 具有强烈信念的 New words! Look at the infographic below and answer the questions. 重点词汇 infographic 信息图表 Facts about DDT: • DDT was first produced in 1874 and was later used as pesticide. • It stays in the environment. • It is highly poisonous to living organism, including humans. • Now banned in many countries, it is still used in some for malaria(疟疾) control. 重点词汇 DDT 二氯二苯三氯乙烷 ; 滴滴涕 ; pesticide 杀虫剂 ; 除害药物 poisonous 引起中毒的 living organism 生物体 banned 明令禁止 malaria 疟疾 How does DDT reach the human body in the food chain? In order to kill insects, DDT is absorbed by the plants and later consumed by animals; humans in turn eat those animals. DDT also leaks through the soil and into rivers and lakes, where it contaminates fish consumed by humans.当滴滴涕被喷洒到植物上以杀死昆虫时，它会被植物吸收，然后被动物吃掉；人类反过来吃掉这些动物。滴滴涕也会通过土壤泄漏到河流和湖泊中，污染人类食用的鱼类。 What harm does DDT cause? DDT is highly dangerous to environment，human beings，animals，social stability. DDT又叫滴滴涕，二二三，化学名为双对氯苯基三氯乙烷(Dichlorodiphenyltrichloroethane)，化学式(ClC₆H₄)₂CH(CCl₃)，是有机氯类杀虫剂。中文名称从英文缩写DDT而来，为白色晶体，不溶