Bo8-Unit-2-Cloning-Reading.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,*,Unit 2 cloning,Which ones are,natural clones,?,Which ones are,man-made,?,How do they,differ,.,Warming up,A strawberry plant,Natural clone,Growing new plants,man-made clone,Natural clone,is one that,occurs,in a natural form of cloning,without human help.,Man-made clone,is one that,produced through human,intervention(介入).,Dolly the sheep,She,was cloned,while,the others were born naturally.In other word,Dolly was a _ sheep.,cloned,How does Dolly,differ from,other sheep?,man-made clone,Pre-reading add your questions to the list,Question list about cloning,What is a clone?,How is a clone produced?,What benefits can humans,gain,from cloning?,What problems may,arise,when humans are cloned?,5.,6.,CLONING:WHERE IS IT LEADING US?,Predict,:,To which question from our list the answer might be found in this passage?,Fast reading3 mins,2.Outline key word for each paragraph,Para.1 _,Para.2 _,Para.3 _,Para.4 _,Para.5 _,Read for,Main idea of the passage,Introduction/definition,Uses and breakthrough,Problems of Dolly,the Impact of cloning,Peoples reaction to cloning,The main idea of the text is_,A.animal cloning is very valuable and can benefit the world.,B.animal cloning could be misused by bad people so it must be forbidden,C.animal cloning is well developed because Dolly the sheep was born.,D.animal cloning raised arguments and scientists are not sure about its future.,main idea,1.Dolly the sheep_.,A.looked exactly like the sheep that provides the egg.,B.was the exact copy of the sheep that provides the nucleus.,C.looked like the sheep that gave birth to it.,D.had the characteristics of all three sheep.,Reading II Skimming(5ms),Choose the right answer according to the text.,2.It can be inferred from the passage that a cloned animal_.,A.usually lives as long as the original one B.usually lives longer than the original one C.usually lives longer than the original one D.is usually as healthy as the original one,3,.The sheep that donated the somatic cell most probably lived _ years.,A.3 B.6 C.9 D.12,4.Which of the following is not an advantage of cloning?,Cloning can be used for medical purposes.,Large quantities of food can be produced by cloning.,Cloning can help keep animals from becoming extinct.,Famous persons who have passed away can be cloned.,5.In the second paragraph,the word“straightforward”means _.,A.uncomplicated B.honest C.frank D.difficult,6.,Which of the follow is,NOT,a problem or danger of cloning according to the text?,Cloned Bin Ladens would do harm to the world.,B.Animal clones may develop the illness of older animals and may die younger than the donor animals.,C.There are moral objections to cloning human beings.,D.Too much cloning may lead to the destruction of the balance of nature.,Cloning is,a way of,making an,exact copy,of another animal and plant.,What is cloning?,Cloning happens both in _ and in_.They can be cloned by _ and _.,plants,animals,themselves,humans,Natural clone,Man-made clone,Para 1,listen and fill the blanks,Intensive Reading,1.How many major uses do cloning have?,Firstly,commercial,Secondly,research,2.,When was the cloning of Dolly the sheep born?,Why did the scientists,succeed in cloning it?,Para 2,Read together,1996,.It was their determination and patience that,paid off,.,The major uses and breakthrough of cloning,At first,the fact that Dolly developed _ in a natural way was _.,Later,the news _she lived for six years,half the length of the life of the _ one was _.,Finally,the problem that occurred to the scientists was that a cloned animal lives_ than the original one.,Para 3,The problems of Dolly,normally,encouraging,orginal,that,disturbing,shorter,read freely,1.The fact,that she seemed to develop,normally,was very encouraging.,2.Then came the disturbing news,that Dolly had become seriously ill,.,Appositive clause,We can infer from the last three paragraphs that _.,The normal development of Dolly had no effect on the cloning of other species.,B.Dollys serious disease and final death disturbed the whole world.,C.Dolly successfully cloned a new lamb with the help of cloning scientists.,D.There were arguments about animals about animal cloning and concerns about the future of cloning.,Para 4&5,The impact and peoples reaction to cloning,the author does not state any,personal opinion about cloning.,A.Objective,(be fair),B.Negative(be against it),C.Positive(be in favor of it),The writers,attitude,towards cloning,B,ecause,_,Detail reading and discussion,Fill in the chart using the information from the text.,Problems or dangers of cloning,Advantages of cloning,Animals may_,_ _ of older animals.,Medical cloning could _ _ for serious _ in humans.,develop,the,illnesses,produce,cures,illnesses,Animal clones may _ _ than the donor animals,Cloning plants can _ _ of similar _ _ _.,_ _ may want to clone themselves.,Cloning plants can be _ for research on _.,There are _ _ to cloning human beings.,Cloning can help save _ _.,die,younger,produce plants,quality,for,sale,Evil,leader,useful,new plant species,moral,objections,endangered animals,Practice:,Retell the procedure of cloning Dolly the sheep?,克隆羊诞生图示,1.The fact is that they are both examples of natural clones.,2.The questions that concerned all scientists were:“Would this be a major difficulty for all cloned animals?”,3.It suddenly opened everybodys eyes to the possibility of,using,cloning to cure serious illnesses,and even,producing,human beings.,4.Although at present human egg cells and embryos needed for cloning research are difficult to obtain,newspapers,wrote of,evil leaders hoping to clone themselves,to attain their ambitions.,understand the sentences:,Predicative clause,Attributive clause,Practice discussion(8ms),Choose one of the following questions to discuss in groups.The leader of each group should write down every members opinion,then the volunteers will show your group work to the whole class:,Questions:,Do you support the idea of producing human embryos(,胚胎,)for medical purposes?Why?,Do you think it a good idea to use cloned humans for organ(,器官,)transplants?Why?,Do you think a cloned human should have human rights?Why?,Homework,1.,创新作业本,period I,2.,Finish Ex.1,2,3,Page12.,我国成功繁殖克隆兔 体形要比一般兔大许多,2023年5月中旬成功地繁殖了一只胚胎细胞克隆兔。,第一只克隆宠物猫,克隆马及其“母亲兼姐姐”,2023年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪,克隆旳荧光小猪,(左)和正常小猪(右),A strawberry plant,The new plants that grow from the runners are exact copies of the original plant.,富贵竹插枝即活,Lucky bamboo,The gardener should cut the plant,then the cutting produce another new plant.,Twins,They are born naturally and,identical in,sex and appearance.,