高中英语 Unit2(Cloning)课件人教版选修8 课件.ppt

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,*,*,*,UNIT TWO READING,CLONING:WHERE IS IT LEADING US,Skim the text to find out the answers to the following questions.,1.What is cloning?,Skimming,Cloning is a way of making an exact copy of another animal and plant.,Skim the following passage and match the paragraph with the correct sentence.,Para 1 A.The problems of Dolly,Para 2 B.The two major uses of,cloning,Para 3 C.The attitudes towards,cloning,Para 4 D.The definition of cloning,Para 5 E.The effect of cloning in,society,Scanning,1.Do you think cloning plants is straightforward or complicated?What about cloning animals?,Cloning plants is straightforward while cloning animals is complicated.,The important events in animal cloning history,In 1952 tadpole was cloned.It is the first animal to be cloned,In 1963,an Asian carp(,鲤鱼）,was cloned.Ten years later,a Chinese scientist named Tong dizhou cloned a European carp.,In 1996,a sheep called Dolley was born.It is the first mammal to be cloned.It is considered to be the greatest success in the development of cloning,.,A macaque,（猕猴）,was cloned in 2000.Later scientists cloned many monkeys.It can be used to test out some diseases such as diabetes(,糖尿病）,Mules(,骡子）,have no ability to give birth to a baby.A mule was cloned in 2003.It is the first animal which lack fecundity(,生育能力）,to be cloned.,Whats the greatest success in the development of animal cloning?,.,The procedure of the cloning of Dolly the sheep,Task III Intensive reading,True or false:,1,.Cloning means making a copy of an animal or a plant.(),2,.Gardeners can make a lot of money by cloning plants.(),3,.Cloning is something that has been developed quite recently.(),4,.Dolly the sheep was the first successful clone of a mammal.(),5,.The cloning of Dolly the sheep succeed because the scientists were determined and work hard with patience.(),F,T,F,T,T,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,Task IV:,Choose the best answer.,2.The,main idea,of the text:,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.,3.The sheep that donated the somatic cell most probably lived _years.,A.3 B.6 C.9 D.13,4.Which of the following is,not,an advantage of cloning?,Cloning can be used for medicine purposes.,Large quantities of food can be produced by cloning.,Cloning can help keep animals from becoming extinct.,Famous person who have passed away can be cloned.,5.,The writer s point of view,in this reading passage:,He/She is confused about cloning.,He/She is in favor of cloning.,He/She is against cloning.,He/She is impartial.,Problems/dangers of cloning,Advantages of cloning,Animal clones may,develop,the,illnesses,of older animals,.,Medical cloning could,produce,cures,for serious degenerative,illnesses,in humans.,Animal clones may,die,younger,than the donor,animals.,Cloning plants can,produce,plants,of similar,quality,for,sale,.,Evil,leaders,may want to,clone themselves.,Cloning plants can be,useful,for research on,new,plant,species,.,There are,moral,objections,to,cloning human beings.,Cloning can help save,endangered,animals,.,Task IV:,Fill in the chart using the information from the text.,Practice activity:,Debate,Are you in favor of cloning or against cloning?What is your point of view on it?,Homework,Write a short passage about the advantages and disadvantages of cloning.At the end of your passage,you can add your own opinion.,Thank you!,Goodbye!,