1、Unit 2 Cloning,Using language,The return of the dinosaurs ?,Reading, discussing and writing,Please enjoy some pictures about dinosaurs.,tyrannosaurus霸王/暴龙,Stegosaurs剑龙,Ceratopsids角龙,Brontosaurus雷龙,Pterodactyl翼龙,1 做某事的可能性 2 使电影制作人兴奋 3使.刻骨铭心 4 离做.还很远. 远远不能做. 5 用.做实验 6 正如下表所示 7 致力于 8 生下, 分娩,The possibi
2、lity of doing sth. excite film makersstrikeinto ones heartbe a long way from doingexperiment withas this list showswork on give birth to,9 偶尔，有时 10 通过克隆使.复活 11 据我们现在所知 12 最初的要求 13 徒劳的 14 克服疾病 15 意味着 16 基因用不同的 方式排列,from time to timebring.back to life through cloningwith what we know nowinitial requir
3、ementin vainovercome illnessesmean doing with genes arranged in different ways,17 把抵抗疾病的 能力传给下一代 18 做某事的缺点 19 使物种延续 20 过自然地生活 21 基于 22 恐龙回归地球 的可能性 23 抵制做某事,pass on the ability to resist that disease to the next generationthe drawback to doingcontinue the specieslead/live a natural lifebe based onthe
4、 chance of dinosaurs returning to the earthresist doing,Fast Reading,Match the main idea with each paragraph.,Para1 explain the impossibility of cloning dinosaurs Para2 conclude that its just a dreamPara3 introduce the topic of the passage,A. Supportive. B. Neutral (中立的). C. Negative (否定的). D. Subje
5、ctive(主观的).,objective客观的, positive肯定的 impartial 公平的 arbitrary武断的 optimistic乐观的 pessimistic悲观的critical持批评态度的 cautious谨慎的 indifferent冷漠的 ,What is the writers attitude towards cloning the dinosaurs?,2.Scientists are still experimenting with cloning mammals because they think it can make money.,Fill in
6、the blanks or tell True or False,1.The popularity of films such as_, in which a scientist clones several kinds of _dinosaurs, proves how the idea_a mixture of_ _.,Jurassic Park,extinct,struck,fear and excitement,into peoples,hearts.,the cloning of,mammals is still a new science.,Careful Reading para
7、.1,choose the best answer,1. The film Jurassic Park is popular because _ . A. 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,2. Which of the following is true? A. Mice were cloned in
8、 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.,The animals that have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.,Para2,Unfortunately, with what we know now, this
9、 is either impossible or unsuitable.,Evidence:,2.The_ _ is that you need perfect DNA.3. All_ of cloning an animal will be _ if there is not enough _ in the group to _ _.,initial,efforts,in vain,diversity,requirement,overcome,illnesses,Fill in the blanks according to the passage.,Reasons,diversity,su
10、itable habitat,DNA,Find out the advantages and disadvantages of the diversity in a group of cloned animals,If there is a new illness some of these animals may die ,but others will survive and passed on the ability to resist that disease to the next generation.,They would all have the same arrangemen
11、t of genes and so they might all die of the same disease.,merely a dream,Conclusion,Para3,1. Why shouldnt you clone an extinct animal if there isnt enough diversity in the group?,Questions and answers:,There will not be enough genetic variation in the group to be able to resist new illnesses.,2. Why
12、 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 cant you clone
13、 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 cant survive so long.,The writer of the text_ A. is excited by the possibility of cloning fierce and extinct animals B. believes that extinct animals
14、 can be brought back to life by cloningC. thinks it impossible or unsuitable to clone extinct animals like dinosaurs D. dreams of dinosaurs returning to the earth,主旨大意,2. The film Jurassic Park is popular because _. A. people are interested in the subject of cloning B. all the actors are dinosaurs C
15、. it was directed by a scientist who clones dinosaurs D. it proves very interesting,细枝末节,A,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 wh
16、y a group of cloned animals all die of the same illness do NOT include_. A. they have the same arrangement of genes B. there isnt 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 disease,5. We can infer from
17、the text that_ A. scientists are experimenting to clone dinosaursB. dinosaurs will never return to the earthC. cloned animals will only live in the zooD. the DNA of dinosaurs can only survive 10 000 year,推理判断,Cloning is useful because it could find a cure for illnesses that are presently incurable;
18、it means that endangered species can be preserved; it could help families who cannot have children of their own.,Your opinion of cloning,It is a bad thing because it might produce monsters; it might bring back to life creatures that might harm us; you might be cloned without your knowledge.,Great Au
19、k (1844),Aurochs (1627),Dodo bird (1755),Quagga (1883),Discussion,A sample dialogue,S1: I think the dodo bird should be returned to the earth. It hasnt been extinct very long. So its DNA will still be good enough for cloning.S2: Yes， and sailors in the past always described the dodo as being a very
20、friendly animal. So it would make a good pet. It wasnt too large either.,I cant see any other extinct animals becoming a pet, can you?S1: No, indeed. 1 know its a bird like the Great Auk but neither of them could fly. So if you kept either, it wouldnt escape from a park, a family or its home in the
21、wild. You could also farm a dodo, unlike all the others, and produce many of them as exotic pets.,S2: And what about its large nutritious eggs? Just one would feed a large family. So theres more than one reason for producing it in commercial numbers.S1: Did you know that its meat is very tasty too!
22、Perhaps it could be farmed like ostriches and provide a good source of protein.,S2: The only problem is that it needs hot climate to survive. But thats easy to provide with all its other advantages. I dont think any of the other animals stands a chance against the dodo.S1: So we both agree that the
23、best extinct animal to be cloned is the dodo bird.S2: Yes.,A sample report(1),Lets bring the great auk back to lifeThe great auk is the most suitable animal to be brought back to life. Here are the reasons：Firstly, its feathers dont absorb water, so its useful for protecting clothes from water.Secon
24、dly, farmers can keep it as chicken to earn money.Finally, it became extinct recently, therefore its DNA is still in good condition. So I think the great auk would be the best choice to be brought back to life.,A sample report(2),Lets bring the dodo back to lifeThe dodo is the most suitable animal t
25、o be brought back to life. Here are the reasons：Firstly, its friendly and not harmful, so we can keep it as pet for children.Secondly, its large eggs and tasty meat could be developed for food.Finally, farmers can sell its feathers as decoration. So I think the dodo would be the best choice to be br
26、ought back to life.,A sample report(3),Lets bring the aurochs back to lifeThe Aurochs is the most suitable animal to be brought back to life. Here are the reasons：Firstly, it has thick hair, and we can use its hair to make clothes.Secondly, its long horns can be used for decoration.Finally, its very
27、 large and strong, therefore we can make it help farmers plough the field. So I think the aurochs would be the best choice to be brought back to life.,A sample report(4),Lets bring the quagga back to lifeThe quagga is the most suitable animal to be brought back to life. Here are the reasons：Firstly,
28、 it has beautiful skin as a zebra, so we can use its skin as decoration.Secondly, the meat is very tasty, and we will have another delicious dish.Finally, it just became extinct in 1883, therefore we can easily get its perfect DNA. So I think the quagga would be the best choice to be brought back to
29、 life.,Language points,1 The popularity of the film such as Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs, proves how ideas struck a mixture of fear and excitement into peoples hearts.,strike into ones heart: 使刻骨铭心,他的话使我深感恐惧。His words strike terror into my h
30、eart.,strike：(过去式_;过去分词 _)1). He fell, striking his head on the edge of the table. _2). The area was struck by an outbreak of cholera. _3). An awful thought has just struck me._4). They struck for better working conditions._5). The clock has just struck three. _6) strike a match_Exx. 译:1) Strike whi
31、le the iron is hot._2) 我突然想到我们如何能改善局面了。_,struck,struck,碰，撞，打,（灾难，疾病等）侵袭，爆发,想起，想到,罢工,报时，敲响,划，擦火柴,趁热打铁,It struck me how we could improve the situation.,2. We are a long way from being able to clone extinct animals.,We are far from being able to clone extinct animals., way n.(两点之间的)距离,时间段想要完全适应，她还有很长的路
32、程要走。She still has a long way to go before she fully fits in. a way to do /of doing sth. 做的方法/手段 get into the way of doing sth.养成的习惯 get in the way of sb. doing sth.挡的路,防碍 make way for sb. 给让路/位置,3. From time to time people suggest that the animals that have disappeared from the earth, like dinosaurs
33、, can possibly be brought back to life through cloning. 人们时常设想从地球上消失的动物,例如恐龙,有可能通过克隆技术使它们复活。,from time to time有时, 间或, 偶尔,= occasionally, now and then。She has to work at weekends from time to time.,bring back to life 使复生 come back to life,bring sb./sth. back: 把送回，归还,Please bring back all library book
34、s by the end of the week.,bring sth back: 使回忆起，使想起； 恢复，重新使用,The photographs brought back many pleasant memories.Most people are against bringing back the death penalty.,bring sb. sth./ bring sth. back (for) sb. (给)带回,I brought a T-shirt back for Mark.,4. vain: adj. 徒劳的，枉然的，无结果的； 自负的，自恃过高的,vain attem
35、pt/hope/effort etc 徒劳的尝试/希望/努力,She closed her eyes tightly in a vain attempt to hold back the tears.Shes too vain to wear glasses.,in vain: 枉费心机，徒劳无益，白费力气,All our efforts were in vain.They tried in vain to persuade her to go.,5 resist vt. _,抵抗；对抗,resist sth. 抵制；阻挡某事resist doing sth. 反对/抵制做某事cant/cou
36、ldnt resist doing sth = cant/couldnt help doing sth 忍不住做某事,The bank strongly resisted cutting interest rates.She was charged with resisting arrest.He couldnt resist showing off his new car.,知识链接：resistance：n. 抵制，抵抗 resistant: adj. 抵制的，抵抗的be resistant to 对有抵抗力,6. 就我们现在所知，你不可能克隆那些已经绝种了一万年以上的动物。 _ we k
37、now now, you cannot clone animals that have been extinct longer than 10,000 years.,Based on what/ As far as,based on/upon 以为基础, 依据此处为悬垂分词做状语。其结构为: base sth. on/upon sth. is based on/upon,7. So the chances of dinosaurs ever returning to the earth is merely a dream. adv. 只有,仅,不过 I asked it merely out
38、of curiosity. Its not merely a job, but a way of life. He goes there simply because he likes to. It was just an ordinary day. (只是,仅仅是),He was fined for breaking traffic regulations. The weather is bound to get better tomorrow. His initial reaction was one of shock. I dont care about the price, so lo
39、ng as the car is in good condition. Cats have sharp claws. Men can only adore women who are adorable. Chicks are hatching from the eggs.,Answer key for Exercise 1 on Page 55：,procedure, assumption, be bound to, resist, from time to time，restoring, shortly，claws, brought back,1. in time 2. in danger
40、3. in vain 4. in black pen 5. in favor of 6. In the meantime,Answer key for Exercise 2 on Page 55:,1. I adore homemade rectangular loaves made with brown flour and nuts.2. He is very conservative, and is even in favor of a constitution that gives few rights to immigrant voters.3. When the leader of
41、the chorus retired from the opera, they held a dinner party for him.,Suggested answers to Exercise 3 on Page 55:,4. The media plays an important role in influencing public opinion.5. Dont bother about taking down those decorations yet. The Christmas celebrations arent over yet. 6. The regulations for cloning animals are very strict. He was unable to continue his experiments.,7. Dont bother yourself about cloning my pet cat. I wont expect to bring it back to life.8. The people in flooded areas owed a great deal to the PLA soldiers for their rescue work.,
