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高中英语 U2 Using language学案新人教版选修8


Unit 2 Cloning Period 4 Using language Teaching Aims: 1.掌握以下单词和短语的拼写和用法:strike ...into one's heart、from time to time、 bring back to life、in vain、resist、merely、initial 2.通过运用略读和扫读两种阅读方法完成阅读任务; 3.通过本节课的学习,增进学生对克隆技术的了解,培养学生对科学的兴趣。 Step 1 Leading in Look at the following pictures and think which film they are from. Do you like dinosaurs? Can you see them in our real life? Why? Step 2 Reading Task 1 Skimming (match the main idea with each paragraph) Part 1 A. Reasons for not cloning Part 2 B. Possibility of cloning Part 3 C. History of cloning Part 4 D. Conclusion(结论) Task 2 Scanning Division Part 1 Detailed facts ? The idea ______ a mixture of fear and excitement into people’s hearts ? Scientists are still _________________ cloning mammals ? In the _____ research using the embryos of mice ? In 1996 first clone of a ________ :Dolly the sheep ? In 2000 cow _____________ a bison ? ___________________ people suggest that extinct animals can be ____________________ through cloning ,but it ’ s impossible or unsuitable(不合适的) .There are many reasons : ? The ______ requirement(要求) is that you need perfect DNA. ? All efforts of cloning an animal will be ________ if there is not enough diversity( 多 样 性 ) in the group to overcome( 战 胜 , 克 服 ) illnesses. ? It would be unfair to clone any extinct animals if they were to live in a zoo . ? So the chance of dinosaurs ever returning to the earth is ________ a dream. Part 2 Part 3 Part 4 Task 3 Choose the best answer: 1. The film Jurassic Park

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