山东省泰安市肥城市第三中学高中英语 Unit2 Cloning reading2理解学案 新人教版选修8 (1).doc

山东省泰安市肥城市第三中学高中英语 unit2 cloning reading2理解学案 新人教版选修8 【学习目标】分析文脉，理解课文，使用适当的阅读方法与技能，把握课文内容并获取信息，处理信息。【学习重点，难点】提高阅读文章的技巧和如何从文章中获取有效的信息的能力。【课型】新授课【回顾预习】熟读第二部分单词，浏览课文，了解大意。【新知识学习】task 1. class report. task 2. self-learning（自主学习）skimming:1. why dont the author believe the dinosaurs can be cloned ?_2. why shouldnt you clone an extinct animal if there isnt enough diversity in the group? _3 .how many years ago did dinosaurs disappeared?_scanning: arrange according to time_1 .research using the embryos of mice2. first experimental clones of cows3. first experimental clones of mice4. work on the embryos of sheep and mice5. chinas first cloned twin calves 6. cloning of frogs 7. first clone of a mammal 8. cow gave birth to a bisondetailed reading_ for its impossibilityperfect dna is needed.there is not enough _ in the group. a (n) _ would be needed for the cloned extinct animals._the chance of dinosaurs returning to the earth is _find out the following phrases 1.使-刻骨铭心_2.生，生产_3.不时的_4.使复生，使复活_5.白费力气，徒劳_6.战胜疾病_7.意味着做某事_8.把-传递给某人_9.死于-_10.过自然的生活_11.以-为基础_12.回到地球的机会 _ step 3.discussion and presentation 小组讨论自主学习中的问题，并进行展示和点评,点评过程中要注意补充和质疑。【当堂达标】choose synonyms1.-， proves how the idea struck a mixture of fear and excitement into peoples hearts.a. have on the brain b. confused c. droved people crazy d. scared2. from time to time people suggest that extinct animals -a. there was a time when b. occasionally c. all the time d. each time3. people suggest that extinct animals like dinosaurs , can possibly be brought back to life.a. kept up b. resist c. live on d. relived4. the initial requirement is that you need perfect dna.a. most thankful b. most pressing c. most difficult d. most needed5. all efforts of cloning an animal will be in vain if there is not enough diversity- a. go to waste b. useless c. helpless d. meaningless6.-,but others will survive and pass on the ability to resist that disease to the next generation. a. oppose b. slide c. hire d. indicate7.so the chance of dinosaurs ever returning to the earth is merely a dream. a. only b. surely c. abruptly d. miserably【总结提升】discussionplease turn to page 16, and discuss which of the four animals do you like to be brought to life, and why.【homework】 做活页相应习题。答案：1.65,000,000 years ago61432785reasons, diversity, suitable habitat, conclusion, merely a dream1.strike -into ones heart 2. give birth to 3.from time to time4.bring back to life 5. in vain 6. overcome difficulties 7.mean doing 8. pass o