1、Unit 2 CloningUsing languageReading,discussing and writingPlease 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 possibility of doing sth.excite film makersstrikeinto on
2、es 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 requirementin vainovercome illnessesmean doing with genes
3、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 chance of dinosaurs returning to the earthresist doing
4、Fast ReadingMatch the main idea with each paragraph.Para1 explain the impossibility of cloningdinosaursPara2 conclude that its just a dreamPara3 introduce the topic of the passageA.Supportive.B.Neutral(中立的).C.Negative(否定的).D.Subjective(主观的).objective客观的,positive肯定的impartial 公平的arbitrary武断的optimistic
5、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 the blanks or tell True or False1.The popularity of films such as_,in which a sci
6、entist clones several kinds of _dinosaurs,proves how the idea_a mixture of_ _.Jurassic Parkextinctstruckfear and excitement into peopleshearts.the cloning ofmammals is still a new science.Careful Reading para.1choose the best answer1.The film Jurassic Park is popular because _.A.people are intereste
7、d in the subject of cloningB.all the actors are dinosaursC.it was directed by a scientist who clones dinosaursD.it proves very interesting2.Which of the following is true?A.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 succe
8、ssful in cloningmammals.1.The animals that have disappeared from the earth,like dinosaurs,can be brought back to life through cloning.Para2Unfortunately,with what we know now,this is either impossible or unsuitable.Evidence:2.The_ _ is that you need perfectDNA.3.All_ of cloning an animal will be _if
9、 there is not enough _ in the group to_ _.initialeffortsin vaindiversityrequirementovercomeillnessesFill in the blanks according to the passage._ for its impossibility Perfect is needed.There is not enough _ in the group.A(n)_ would be needed for the cloned extinct animals.Reasonsdiversitysuitable h
10、abitatDNAAdvantage of diversityDisadvantage of diversityFind out the advantages and disadvantages of the diversity in a group of cloned animalsIf 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
11、would all have the same arrangement of genes and so they might all die of the same disease._The chance of dinosaurs returning to the earth is _.merely a dreamConclusionPara31.The writer of the text_ A.is excited by the possibility of cloning fierce and extinct animals B.believes that extinct animals
12、 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 dinosaursC.it was d
13、irected by a scientist who clones dinosaursD.it proves very interesting细枝末节A3.Which of the following is true?_A.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 a
14、nimals 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 illnessesC.the illness is a new oneD.their arrangement of genes can not resist that new disease5.We can infer from the text that_ A.scientists ar
15、e 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Great Auk(1844)Aurochs(1627)Dodo bird(1755)Quagga(1883)DiscussionA sample dialogue S1:I think the dodo bird should be returned
16、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 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:
17、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 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
18、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!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 eas
19、y 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 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
20、be brought back to life.Here are the reasons：Firstly,its feathers dont absorb water,so its useful for protecting clothes from water.Secondly,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
21、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 to 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
22、 developed for food.Finally,farmers can sell its feathers as decoration.So I think the dodo would be the best choice to be brought 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
23、thick hair,and we can use its hair to make clothes.Secondly,its long horns can be used for decoration.Finally,its very 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 q
24、uagga back to lifeThe quagga is the most suitable animal to be brought back to life.Here are the reasons：Firstly,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,theref
25、ore we can easily get its perfect DNA.So I think the quagga would be the best choice to be brought back to life.Language points1 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 exc
26、itement 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 heart.strike：(过去式_;过去分词 _)1).He fell,striking his head on the edge of thetable._2).The area was struck by an outbreak of cholera._3).An awful thought has just struck me._4).They struck for better workin
27、g conditions._5).The clock has just struck three._6)strike a match_Exx.译:1)Strike while the iron is hot._2)我突然想到我们如何能改善局面了。_struckstruck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
28、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
29、animals that have disappeared from the earth,like dinosaurs,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 lifebring sb./st
30、h.back:把送回，归还Please bring back all library books 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
31、，枉然的，无结果的；自负的，自恃过高的vain attempt/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 s
32、th.反对/抵制做某事cant/couldnt 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
33、物。_ we know now,you cannot clone animals that have been extinct longer than 10,000 years.Based on what/As far asbased 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/uponsth.is based on/upon7.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 of cur
34、iosity.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 long as the car is
35、 in good condition.Cats have sharp claws.Men can only adore women who are adorable.Chicks are hatching from the eggs.Using Words and ExpressionsAnswer 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 3.
36、in vain 4.in black pen 5.in favor of 6.In the meantimeAnswer 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 the chorus r
37、etired 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.