高中英语必修9Module2 Section 1 A text structure analysis of DNA---the secret of lifeVIP免费

Module2DNA-theSecretofLifePartTwo:TeachingResources第二部分教学资源Section1:AtextstructureanalysisofDNA---thesecretoflife1.TypeofwritingandasummaryofthetextTypeofwritingThepassageisastyleofcommentMainideaofthepassageTheyhavefoundtheanswertooneofthequestionsofbiology.Thediscoveryhasinfluencedourlifegreatly.Wehavealreadyexperiencedthebenefitsinmanyareas.TopicofPart1JamesWatsonandFrancisCrickfoundtheanswertohowlivingsreproducethemselves.TopicofPart2.(StoryA)DNAtestingcanhelpincriminalinvestigations.TopicofPart2(StoryB)Surgeonscaninsertsomenewgenesintothebabybeforeitisborntomakeitgood-lookingandintelligent.TopicofPart2(StoryC)Surgeoncanmakeanadultrunfasterbyinsertingananimalgeneintohisbody.TopicofPart2(StoryD)Peoplecanpredicttheinheritedillnessbeforebabyisborn..TopicofPart3Thegeneticengineeringwillcreatenewcharacteristics.Thus,wewillfacesomenewsocialproblems.2.AretoldversiontothetextOnFebruary28,1953,twoscientistsfoundthesecretoflife.Theyfindtheanswertooneofthemostimportantquestionsofbiology.Thatishowlivingthingsreproducethemselves.TheanswerisinachemicalinthehumanbodycalledDNA.ThetwoscientistssucceededinunderstandingthestructureofDNAandhowgenesareabletoreproducethemselves.ThediscoveryofDNAhasalreadyhadandwillcontinuetohaveanenormousonourlives.Wehavealreadyexperiencedthebenefitsinmanyareas.Forexample,DNAtestingcanhelpalotincriminalinvestigationsbycomparingthegenes.Ifyouwantagood-lookingandintelligentbaby,surgeonscaninsertsomenewgenesintoitbeforethebabyisborn.Anadultalsocanbemadetorunfasterbyinsertingananimalgenethroughanoperation.Humanswillpredictsomeinheritedillnessbeforethebabyisborn.Thesenewgeneswill用心爱心专心116号编辑createnewcharacteristics.Ifwestartchoosingthecharacteristicsofourbabies,wearealteringnatureinaverydirectway.Whatmighttheconsequencesbe?Asaresult,therearemanyimportantissuestodiscuss.Letushopethatwecanfindtherightanswers.用心爱心专心116号编辑