新视野大学英语3unit2课件.pptx

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1、I.Pre-reading Activities:Listen,Look&SayWatch&DiscussWatchthevideoanddiscussthegiventopics.Questions&AnswersListentoapassageandanswersomequestions.Listentoapassageandfillinthemissingwords.CompoundDictationAcquaintyourselfwithsomerelevantinformation.BackgroundInformation第1页/共53页I.Pre-reading Activiti

2、es:Listen,Look&SayMedicine&Science in Sports&Exercise:Thisisamultidisciplinaryjournalfeaturingoriginalinvestigations,clinicalstudies,andcomprehensivereviewsoncurrenttopicsinsportsmedicineandexercisescience.Withthismultidisciplinaryjournal,exerciseBack下一页下一页physiologists,physiatrists,physicaltherapis

3、ts,teamphysiciansandathletictrainersgetavitalexchangeofinformationfrombasicandappliedscience,medicine,education,andalliedhealthfields.I.Pre-reading Activities:Listen,Look&SayDigestivesystem:Thedigestivesystemisaseriesofholloworgansjoinedinalong,twistingtubefromthemouthtotheanus.Insidethistubeisalini

4、ngcalledthemucosa.Inthemouth,stomach,andsmallintestine,themucosacontainstinyglandsthatproducejuicestohelpdigestfood.上一页上一页Back第3页/共53页CompoundDictationDirections:Youwillhearapassage.Itwillbereadtwice.Listencarefullyandsupplythemissingwords.I.Pre-reading Activities:Listen,Look&SayBack第4页/共53页Although

5、manypeople_thatbalanceandmovementproblemsare_withage,anincreasing_ofevidencedemonstratesthatexercisecanhelp_balanceandstrengthinelderly_andreducetheirchanceof_.InWolfsstudy,publishedinMay1996,215_aged70to96weredividedintothreegroups._,onegrouptookaweeklytai chiclass,and_.After15weeks,“thetai chigrou

6、pdidthebest,and_,”Wolfsaid.acontrolgroupmetforaweeklydiscussionreducedthechanceofhavingafallby47percentseniorsOnegroupperformedbalanceexercisesonacomputer-controlledplatformonceaweekfallingimproveindividualsbodyassumeinevitableBack第5页/共53页Questions&AnswersI.Pre-reading Activities:Listen,Look&SayBack

7、1.Whydowomenoftennothaveenoughironintheirbodies?2.Ifironlevelsarelow,whatproblemscanwomenexperience?3.Whatcanyoueattogetironandwhatdisadvantagescanthesesupplementssometimeshave?第6页/共53页keyReferenceWords:togoonadiet,tokeeponeselfslim,tobeparticularabout,fat-reducingexercise,torejectiron-richfood,tole

8、adtogreaterlossofiron,physiologicalcharacteristics,irondeficiency,monthlybleedingThisisoftenbecausemostofthemgoonarestricteddietsoastokeepthemselvesslim.Ofcourse,therearealsomanyothercausesofit.Oneisthatmanywomenaremoreparticularaboutwhattheyeatthanmendo.Anotheristheirfat-reducingexercise.Iftheyrest

9、ricttheirdietbyrejectingiron-richfood,moreexercisemayleadtogreaterlossofironintheirblood.Athirdoneliesintheirphysiologicalcharacteristics.Womenofchild-bearingageareatthegreatestriskofirondeficiencyastheirmonthlybleedingisamajorsourceofironloss.返回返回第7页/共53页key返回返回ReferenceWords:tosufferfrom,irondefic

10、iency,ironreserves,themoleculesofbloodprotein,theworkingmuscles,fatigue,poorperformance,togotozero,tofeeloutofbreath,tobeintroubleIfwomensufferfromirondeficiency,theymayexperiencesuchproblemsasfollows:Iftheirironreservesbecomelowerandloweruntiltheyarenotenoughtoformthemoleculesofbloodproteinthattran

11、sportoxygentotheworkingmuscles,fatigueandpoorperformancemaybegintoappearintheirdailylife.Oncetheirironreservesgotozero,theyoftenfeeltired,weak,andoutofbreath.Iftheywaituntilthatpoint,theyarereallyintrouble.第8页/共53页返回返回ReferenceWords:toaddto,thebestsourcesofiron,peoplewithlowironreserves,totakesupple

12、ments,generallyspeaking,toundotheproblem,toconsumeiron-richfood,toproduceafeeling,ofwantingtothrowup(呕吐呕吐),tobepoisonousinsomecaseskeyPeoplewhosufferfromirondeficiencycanaddmoreiron-richfoodtotheirdiet.Thebestsourcesofironaremeat,chicken,andfish.Goodsourcesofotherformsofironincludedates,beans,andsom

13、eleafygreenvegetables.Peoplewithlowironreservesmayalsotakesupplements.Butgenerallyspeaking,itsbettertoundotheproblemofirondeficiencybyconsumingiron-richfoodthanbytakingsupplements,becausesupplementsmayproduceafeelingofwantingtothrowup,andmaybepoisonousinsomecases.第9页/共53页Directions:Watchthevideoandt

14、hendiscussthetopicsasfollows:2.Whatadvicecanyougiveonphysicalexercise?key1.Whatdoyouthinktheeffectsofexerciseare?keyI.Pre-reading Activities:Listen,Look&SayVideowatchingBack第10页/共53页返回返回第11页/共53页Doyouoftengoinforphysicalexerciseandwhatbenefitscanyougetfromit?Haveyoueverstoppedtoseekthenegativeeffect

15、sexercisebringsabout?Path of thinking:keySummary:Asisknowntoall,lifeliesinexercise.Whateverformofexerciseyoutake,youcanreapalotfromitaslongasyoupersistinit.Ingeneral,exercisecanbringusbenefitsasfollows:1)Properexercisecanstimulatetheflowofourblood,thusbetteringourwholehealthconditions.2)Regularexerc

16、isecangreatlyimprovethespeedwithwhichourbrainsreacttowhatisgoingonaroundus.3)Goodandprogressiveexercisecanhelpsetupinourselvesambitionforsuccessaswellasbalanceofmind.moremore Justaseverycoinhastwosides,however,exercisecanalsobringusharm.Ifyouarenormallyinactiveandthen,promptedbyasuddenimpulse,starta

17、bigprogramofintenseexercise,therearemorechancesthatyouhaveyourselfinjured.Inaddition,asforthosewhogoonafat-reducingdiet,themoreexercisetheytake,thegreaterlossofirontheywillsufferandtheworsetheirhealthconditionswillget.Andworstofall,continualaswellasexcessiveexerciseismorelikelytoresultinsuddendeath.

18、Thus,howtogoinforexerciseissomethingworthmoreofourconcern.返回返回第12页/共53页Whatsyourartofexercising?Whatshouldnewexerciserspayattentionto?Path of thinking:keySummary:Thereisnothingnewinmywayofexercising,buttherearetwopracticesIalwaysclingto:1)Inevertrytofollowthefashion.Nomatterwhetherthehulalooportheso

19、cialdancingisin,myinterestinthesameexercisealwaysremainswhatithasbeen.2)Theformsofmyexercisechangewithmyage.WhenIwasinteensandtwenties,Iwasfondofplayingballs;whenIwasmiddle-aged,Iturnedmyinteresttotable-tennis;andnowIamgettingoninyears,soIbecomeaddictedtotai chi,anexercisesuitabletothesenior.moremor

20、e Herearetheinsightsgleanedfrom myownexperienceinphysicalexercise:1)Beforeyoutakeanyphysicalexercise,youmusthaveaclearideaaboutwhatkindofexerciseisgoodforyourhealthaswellassuitabletoyourownphysicalconditions.2)Onceyoustartyourprogramofexercise,bothprogressivenessandregularitybecometwokeyingredientsi

21、nyoursmoothimplementationoftheprogram.3)Withtheamountofyourexerciseonagradualincrease,youshouldaddmoreiron-richfoodstoyourdailydiet.返回返回第13页/共53页II II.Text Analysis:Main Idea and Devices for Developing ItText Analysis:Main Idea and Devices for Developing ItMainideaofthetextanddevicesfordevelopingitM

22、ainideaofeachpartanddevicesfordevelopingitNewwords&TextTranscriptDevicesMainideaNewWordsTextPartPartPartPartIVIV问题解决法问题解决法问题解决法问题解决法引言法引言法引言法引言法第14页/共53页BackII II.Text Analysis:Main Idea and Devices for Developing ItText Analysis:Main Idea and Devices for Developing ItremedyPhrasesandExpressionslead

23、tobouncebackingeneraluptotakeinatrisktipovertheedgeoutofbreathaddsth.tothrowupgoupsumupProperNamesPurdueUniversityRoseanneM.LyleMedicine&Science in Sports&ExerciseJohnL.BeardNancyClark第15页/共53页II.II.Text Analysis:Text Text Analysis:Text BackIronandtheEffectsofExercisePara.1Sportsmedicineexpertshaveo

24、bservedforyearsthatenduranceathletes,particularlyfemales,frequentlyhaveirondeficiencies.NowanewstudybyateamofPurdueUniversityresearcherssuggeststhatevenmoderateexercisemayleadtoreducedironinthebloodofwomen.下一页下一页上一页上一页第16页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.2“Wefoundthatwomenwh

25、owerenormallyinactiveandthenstartedaprogramofmoderateexerciseshowedevidenceofironloss,”saysRoseanneM.Lyle,associateprofessoratPurdue.Herstudyof62formerlyinactivewomenwhobeganexercisingthreetimesaweekforsixmonthswaspublishedinthejournalMedicine&Science in Sports&Exercise.下一页下一页上一页上一页第17页/共53页II.II.Te

26、xt Analysis:Text Text Analysis:Text BackParas.3-4a“Womenwhoconsumedadditionalmeatortookironsupplementswereabletobounceback,”shenotes.“Butthenewexerciserswhofollowedtheirnormaldietshowedadecreaseinironlevels.”Irondeficiencyisverycommonamongwomeningeneral,affectingoneinfourfemaleteenagersandoneinfivew

27、omenaged18to45,respectively.Buttheratioisevengreateramongactivewomen,affectingupto80percentoffemaleenduranceathletes.(To be continued)下一页下一页上一页上一页第18页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.4bThismeans,Lylesays,that“toomanywomenignoretheamountofirontheytakein”.Womenofchild-bearinga

28、geareatgreatestrisk,sincetheirmonthlybleedingisamajorsourceofironloss.Plus,manyhealth-consciouswomenincreasetheirriskbyrejectingredmeat,whichcontainsthemosteasilyabsorbedformofiron.Andbecausewomenoftenrestricttheirdietinanefforttocontrolweight,theymaynotconsumeenoughiron-richfood,andareliabletoexper

29、ienceadeficiency.下一页下一页上一页上一页第19页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.5“Theaveragewomantakesinonlytwothirdsoftherecommendeddailyallowanceforiron,”notesanotherexpert.“Forawomanwhoalreadyhasapoorironstatus,anyadditionalironlossfromexercisemaybeenoughtotipherovertheedgeintoamoreser

30、iousdeficiency,”notestheexpert.下一页下一页上一页上一页第20页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.6Exercisecanresultinironlossthroughavarietyofmechanisms.Someironislostinsweat,and,forunknownreasons,intenseenduranceexerciseissometimesassociatedwithbleedingofthedigestivesystem.Athletesinhigh-im

31、pactsportssuchasrunningmayalsoloseironthroughaphenomenonwheresmallbloodvesselsinthefeetleakblood.下一页下一页上一页上一页第21页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.7Therearethreestagesofirondeficiency.Thefirstandmostcommonishavinglowironreserves,aconditionthattypicallyhasnosymptoms.Fatigueand

32、poorperformancemaybegintoappearinthesecondstageofdeficiency,whennotenoughironispresenttoformthemoleculesofbloodproteinthattransportoxygentotheworkingmuscles.Inthethirdandfinalstage,peopleoftenfeelweak,tired,andoutofbreathandexerciseperformanceisseverelycompromised.下一页下一页上一页上一页第22页/共53页II.II.Text Ana

33、lysis:Text Text Analysis:Text BackParas.8-9a“Peoplethinkthatiftheyrenotatthethirdstage,nothingiswrong,butthatsnottrue,”saysJohnL.Beard,whohelpeddesignthePurduestudy.“Yourenotstage3untilyourironreservesgotozero,andifyouwaituntilthatpoint,youreintrouble.”However,mostpeoplewithlowironreservesdontknowth

34、eyhaveadeficiency,becausetraditionalmethodsofcalculatingtheamountofironinblood(bycheckinglevelsofthebloodproteinthattransportsoxygen)arenotsufficient,Beardstates.(To be continued)下一页下一页上一页上一页第23页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.9bInstead,itsimportanttochecklevelsofadifferent

35、compound,whichindicatestheamountofstorageofironintheblood.Whileactive,child-bearingagewomenaremostlikelytohavelowironstores,henotes,“Menarenotsafe,especiallyiftheydonteatmeatandhaveahighlevelofphysicalactivity.”(Anestimated15percentofmalelongdistancerunnershavelowironstores.)Beardandotherexpertssayi

36、tsadvisableforpeopleinthesegroupstohaveayearlybloodtesttocheckbloodironreserves.下一页下一页上一页上一页第24页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.10aIfironlevelsarelow,talkwithaphysiciantoseeifthedeficiencyshouldbecorrectedbymodifyingyourdietorbytakingsupplements.Ingeneral,itsbettertoundothe

37、problembyaddingmoreiron-richfoodstothediet,becauseironsupplementscanhaveseriousshortcomings.(To be continued)下一页下一页上一页上一页第25页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.10bSupplementsmayproduceafeelingofwantingtothrowup,andmaybepoisonousinsomecases.Thebestsourcesofiron,andtheonlysource

38、softheformofironmostreadilyabsorbedbythebody,aremeat,chicken,andfish.Goodsourcesofotherformsofironincludedates,beans,andsomeleafygreenvegetables.下一页下一页上一页上一页第26页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.11a“Selectbreadsandcerealswiththewordsiron-addedonthelabel,”writessportsdietexper

39、tNancyClark.“Thisaddedironsupplementsthesmallamountthatnaturallyoccursingrains.EatthesefoodswithplentifulVitaminC(forexample,drinkorangejuicewithcerealorputatomatoonasandwich)toenhancetheamountofironabsorbed.”(To be continued)下一页下一页上一页上一页第27页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.

40、11bClarkalsorecommendscookinginironpans,asfoodcanderiveironfromthepanduringthecookingprocess.“Theironcontentoftomatosaucecookedinanironpotforthreehoursshowedastrikingincrease,thelevelgoingupnearly30times,”shewrites.Andpeoplewhoarelikelytohavelowironshouldavoiddrinkingcoffeeorteawithmeals,shesays,sin

41、cesubstancesinthesedrinkscaninterferewithironbeingabsorbedintothebody.下一页下一页上一页上一页第28页/共53页II.II.Text Analysis:Text Text Analysis:Text BackPara.12“Activewomenneedtobealotmorecarefulabouttheirfoodchoices,”sumsupPurduesLyle.“Ifyoupayattentiontowarningsignsbeforeironreservesaregone,youcanremedythedefic

42、iencybeforeitreallybecomesaproblem.”上一页上一页第29页/共53页II II.Text Analysis:Main Idea and Devices for Developing ItText Analysis:Main Idea and Devices for Developing ItMainideaofthetext?Exercisemayleadtomorelossofironinfemales,whichinturnproducesseriouseffectsontheirhealth.Accordingtosportsmedicineexpert

43、s,activewomenshouldpaymoreattentiontoirondeficiencyintheirbodiesandtakecorrectmeasurestoremedyitbeforeitreallybecomesaproblem.Devicesfordevelopingit?Back问题解决法问题解决法问题解决法问题解决法引言法引言法引言法引言法第30页/共53页Problem-Analysis-Solution(问题解决问题解决法法)IronandEffectsofExerciseProblemAnalysisSolutionEvaluationThewholeessa

44、yiswritteninatypicalproblem-analysis-solution-evaluationpattern.Back第31页/共53页Problem:?(Para.1)moremoreNowanewstudybyateamofPurdueUniversityresearcherssuggeststhatevenmoderateexercisemayleadtoreducedironinthebloodofwomen.(Para.1)BackProblem-Analysis-Solution(问题解决问题解决法法)第32页/共53页Provisionofevidencefor

45、theproblem:?(Paras.2&3)1)Theirstudyof62formerlyinactivewomenwhobeganexercisingthreetimesaweekshowedevidenceofironloss;(Para.2)2)Womenwhoconsumedadditionalmeatortookironsupplementswereabletobounceback;3)Thenewexerciserswhofollowedtheirnormaldietshowedadecreaseinironlevels.(Para.3)BackProblem-Analysis

46、-Solution(问题解决问题解决法法)返回返回第33页/共53页Analysisofgeneralcausesforit:?(Para.4)1)Toomanywomenignoretheamountofirontheytakein;2)Womensmonthlybleedingisamajorsourceofironloss;3)Manywomenincreasetheirriskofironlossbyrejectingredmeat;4)Womenareliabletoexperienceadeficiencyasaresultofrestrictingtheirdietinweigh

47、tcontrol.moremoreBackProblem-Analysis-Solution(问题解决问题解决法法)第34页/共53页moremoreAnalysisofspecificcausesforit:?(Paras.5-6)(1)Theaveragewomantakesinonly2/3oftherecommendeddailyallowanceforiron,whichwouldeasilycauseirondeficiencyiftheytakesomeexercises.(Para.5)(2)Someironislostinsweat,andintenseenduranceex

48、ercisesmaycauseirondeficiencythroughbleedingofthedigestivesystemandbleedingofthebloodvesselsinthefeet.(Para.6)BackProblem-Analysis-Solution(问题解决问题解决法法)第35页/共53页moremoreAnalysisofeffectsofirondeficiency:?(Paras.7-8)(1)Fatigueandpoorperformancemaybegintoappearwhennotenoughironispresentintheirbloodtofo

49、rmthemoleculesofbloodproteinthattransportoxygentotheworkingmuscles.(2)Whentheirironreservesgotozero,peopleoftenfeelweak,tired,andoutofbreathandtheirexerciseperformanceisseverelycompromised;andtheyareintrouble.BackProblem-Analysis-Solution(问题解决问题解决法法)第36页/共53页Analysisofimportanceofcheckingironreserve

50、s:?(Para.9)(1)Itisimportanttochecklevelsofadifferentcompound,whichindicatestheamountofstorageofironintheblood.(2)Bothwomenandmenareatriskofirondeficiencyasaresultofahighlevelofactivephysicalexercise.(3)Itisadvisableforpeopleinthesegroupstohaveayearlybloodtesttocheckbloodironreserves.BackProblem-Anal