大学英语大学英语 (8).ppt

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1、Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ mainWarm-up Exercises Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Warm-up Exercises _ listWarm-up Exercises Journey on the Paper Brainstorming CloneBefore ReadingGlobal Reading

2、Detailed ReadingAfter ReadingSupplementary ReadingB R _ Clone _ listCloneNewsDiscussion Ads DesigningBefore ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 1 Now lets go on a journey through the most spectacular 100 years in the history of science an

3、d technology to have an overview of how our understanding of the world has grown from 1900 to today.Journey on the Paper Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 2 MATTERS OF LIFE AND DEATH Medicine and Health1900:Patients battle illnes

4、s,while doctors can do little more than counsel(劝告劝告)and comfort them and keep them clean.Today:Doctors treat and often cure patients with a vast array(一大批一大批)of medicines and medical technologies,but some diseases are still incurable.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSuppleme

5、ntary ReadingB R _ Journey on the Paper 3 MYSTERIES OF THE UNIVERSE Physics and Astronomy 1900:The Milky Way galaxy(星系星系)(including some unexplained nebular clouds(星云星云)is the known universe.Newtons laws explain the physical world.Matter is composed of atoms.Before ReadingGlobal ReadingDetailed Read

6、ingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 4Today:The Milky Way is just one galaxy among countless millions we have observed in the universe.There is no set of laws that explains all phenomena in the physical world,although there are many theories.Atoms are composed of many suba

7、tomic particles,all of which derive from(来自于来自于)energy.MYSTERIES OF THE UNIVERSE Physics and Astronomy Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingToday:Mental illness can be treated with a range of therapies(治疗治疗)and medications.We know a great deal about the chemi

8、stry and the parts of the brain that control our behavior and thoughts.B R _ Journey on the Paper 5RESEARCH INTO OURSELVES Human Behavior1900:There is no cure for the mentally ill,who are confined to insane asylums(精神病院精神病院).“Mind”and“body”arethought of as two separate things.Before ReadingGlobal Re

9、adingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 6FASTER,CLOSER,BETTER Technology1900:The only way to view the Olympic Games in Paris is in person.News about the Games travels to America via(通过通过)telegraph and is printed in newspapers.Today:Millions worldwide watch t

10、he 2008 Beijing Olympics on television,transmitted instantaneously(瞬间瞬间地地)by satellite.The news spreads as well by radio,newspaper,and the World Wide Web.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 7ORIGINS Earth and Life Science1900:There

11、 is no good explanation for catastrophic events such as earthquakes.The Earth is thought to be a mere 50 million years old,and the evolution of species is hotly debated.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Journey on the Paper 8Today:The plates(板块板块)tha

12、t make up the Earths crust(地壳地壳)move over time,causing earthquakes and volcanoes.The Earth is known to be 4,500 million years old.The genetic code of DNA,which drives evolution,is better understood every day.ORIGINS Earth and Life ScienceBefore ReadingGlobal ReadingDetailed ReadingAfter ReadingSuppl

13、ementary ReadingB R _ BrainstormingBrainstorm some of the scientific and technological inventions.geneticengineering cell phonee-mailclone nuclear weapons laptop(笔记本电脑笔记本电脑)nanotechnology(纳米技术纳米技术)Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Discussion Discussi

14、on Do all these inventions always change our lives for thebetter?Give examples to explain your opinion.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ newsNewsNews 1In Feb.1997 News 2 In Apr.1998News 3 In Feb.2003Before ReadingGlobal ReadingDetailed ReadingAfter R

15、eadingSupplementary ReadingB R _ news _ script 1 In February 1997 a group of geneticists(遗传学家遗传学家)led by Ian Wilmut at the Roslin Institute in Edinburgh,Scotland,announced that they had cloned a sheep from the mammary gland tissue(乳腺组织乳腺组织)of a six-year-old ewe(母羊母羊),the first time scientists have b

16、een able to clone an adult mammal(哺乳动物哺乳动物).Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ news _ script 2 Dolly,the first-ever mammal to be successfully cloned from an adult cell,with her first lamb,named Bonnie,is seen at the Roslin Institute in Edinburgh,Scotl

17、and in this image on April 23,1998.Dolly,who was naturally mated at the end of last year with a Welsh Mountain ram(公羊公羊),gave birth to Bonnie on April 13,proving that despite her unusual origins,she is able to breed normally and produce healthy offspring.Before ReadingGlobal ReadingDetailed ReadingA

18、fter ReadingSupplementary ReadingB R _ news _ script 3 Dolly,the sheep,the first mammal to be successfully cloned from an adult cell,has been put down after she was found to have a lung disease,the Roslin Institute in Scotlands capitalEdinburgh said on Feb 17,2003.“She was suffering from an incurabl

19、e disease,”said Dr.Harry Griffin,after Roslin released a statement saying the decision had been taken to put Dolly down after she contracted(感染感染)progressive lung disease.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ DiscussionDiscussionWhat is your attitude tow

20、ards clone?Clone is a member of a group of organisms or plants produced non-sexually from one ancestor.The suggested ethical and practical arguments both for and against cloning：For:Against:Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Discussion _ for1.Technolo

21、gy is not well developed.It has a low fertility rate(出生率出生率).In cloning Dolly,277 eggs were used,30 started to divide,nine induced pregnancy,and only one survived to term(临产临产).2.Clones may be treated as second-class citizens and the unknown psychosocial harm with impacts on the family and society.3

22、.Loss of genetic variation.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Discussion _ Against1.Animals from endangered species could be cloned to prevent extinction.2.Cloning would be a good source for organ and bone marrow(骨髓骨髓)transplants.3.Sterile(不育的不育的)coup

23、les will be able to have offspring who will have either the mothers or fathers genetic pattern.Before ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingAds DesigningUse attention-grabbing images and snappy(简洁简洁)yet informative language in your ads.You might find models of such i

24、mages and language in other public service advertisements,such as (A few good examples can be found at www.tobaccofreekids.org and www.badvertising.org.)Decide for yourself which side of the issue to support and then plan a public service advertisement campaign for or against cloning.1.2.the ones that discourage people from smoking.B R _ Ads DesigningBefore ReadingGlobal ReadingDetailed ReadingAfter ReadingSupplementary ReadingB R _ Ads Designing _ picture 1smoking