Unit 2 Cloning Using Language 课件（57张）

课件57张PPT。Using Language resist merely decoration unable zebra vt. 抵抗；对抗 adv. 仅；只；不过 n. 装饰 adj. 不能的；不会的 n. 斑马 argument aloud reasonable obtainn. 论据；论点；争论 adv. 大声地；出声地 adj. 合情理的；讲道理 的；公道的 vt. 获得；得到 from time to time bring back to life pay off 不时；偶尔 使复生 取得好结果；取得 成功； 赔清克隆的进展 蛙: 1962年，未成功 绵羊: 1996年，多利（Dolly） 猕猴: 2000年1月，Tetra，雌性 猪: 2000年3月，5只苏格兰PPL小猪 牛: 2001年，Alpha和Beta，雄性 猫: 2001年底，CopyCat (CC), 雌性 小鼠: 2002年 兔: 2003年3-4月分别在法国和朝鲜独 立地实现； 骡: 2003年5月，爱达荷Gem，雄性； 6月，犹他先锋，雄性 鹿: 2003年，Dewey 马: 2003年，Prometea，雌性 狗: 2005年，韩国首尔大学，史纳比 Please enjoy some pictures about dinosaurs. 霸王龙剑龙stegosaurs角龙 ceratopsids雷龙 brontosaurus翼龙pterodactyl Reading THE RETURN OF THE DINOSAURS?1. The writer of the text_____ A. is excited by the possibility of cloning fierce and extinct animals B. believes that extinct animals can be brought back to life by cloningRead the passage and then choose the correct answers to the below questions.C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth2. The film Jurassic Park is popular because_____. people are interested in the subject of cloning B. all the actors are dinosaurs C. it was directed by a scientist who clones dinosaurs D. it proves very interesting 3.Which of the following is true?____ Mice were cloned in 1981. B. Dolly the sheep was the first cloned animal. C. The name of the cloned cow is “Bison” D. China was successful in cloning mammals.4. The reasons why a group of cloned animals all die of the same illness do NOT include____. A. they have the same arrangement of genes B. there isn’t enough diversity in the group for it to overcome illnesses C. the illness is a new one D. their arrangement of genes can not resist that new disease5. We can infer from the text that____ A. scientists are experimenting to clone dinosaurs B. dinosaurs will never return to the earth C. cloned animals will only live in the zoo D. the DNA of dinosaurs can only survive 10 000 year Read the passage again and answer the questions. 1.Why shouldn't you clone an extinct animal unless there is enough diversity in the group? There will not be enough genetic variation in the group to be able to resist new illnesses.2. Why is it wrong to clone an extinct animal if it would have to live in a zoo? It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers. The zoo is not a natural environment for a wild animal. 3. Why can't you clone the DNA of animals that have been extinct longer than 10,000 years? The DNA of animals more than 10,000 years old is not suitable for cloning, for it can't survive so long.Discussion May the best animal win! Now in pairs discuss which extinct animals described below are worth r ... ...