新视野大学英语3unit2课件

NewHorizonCollegeEnglish,Unit2:SectionA,新视野,IronandtheEffectsofExercise,Medicine(Para.2)2)Womenwhoconsumedadditionalmeatortookironsupplementswereabletobounceback;3)Thenewexerciserswhofollowedtheirnormaldietshowedadecreaseinironlevels.(Para.3),Back,Problem-Analysis-Solution(问题解决法),返回,Analysisofgeneralcausesforit:?(Para.4),1)Toomanywomenignoretheamountofirontheytakein;2)Womensmonthlybleedingisamajorsourceofironloss;3)Manywomenincreasetheirriskofironlossbyrejectingredmeat;4)Womenareliabletoexperienceadeficiencyasaresultofrestrictingtheirdietinweightcontrol.,more,Back,Problem-Analysis-Solution(问题解决法),more,Analysisofspecificcausesforit:?(Paras.5-6),(1)Theaveragewomantakesinonly2/3oftherecommendeddailyallowanceforiron,whichwouldeasilycauseirondeficiencyiftheytakesomeexercises.(Para.5),(2)Someironislostinsweat,andintenseenduranceexercisesmaycauseirondeficiencythroughbleedingofthedigestivesystemandbleedingofthebloodvesselsinthefeet.(Para.6),Back,Problem-Analysis-Solution(问题解决法),more,Analysisofeffectsofirondeficiency:?(Paras.7-8),(1)Fatigueandpoorperformancemaybegintoappearwhennotenoughironispresentintheirbloodtoformthemoleculesofbloodproteinthattransportoxygentotheworkingmuscles.(2)Whentheirironreservesgotozero,peopleoftenfeelweak,tired,andoutofbreathandtheirexerciseperformanceisseverelycompromised;andtheyareintrouble.,Back,Problem-Analysis-Solution(问题解决法),Analysisofimportanceofcheckingironreserves:?(Para.9),(1)Itisimportanttochecklevelsofadifferentcompound,whichindicatestheamountofstorageofironintheblood.(2)Bothwomenandmenareatriskofirondeficiencyasaresultofahighlevelofactivephysicalexercise.(3)Itisadvisableforpeopleinthesegroupstohaveayearlybloodtesttocheckbloodironreserves.,Back,Problem-Analysis-Solution(问题解决法),返回,more,Solutiontotheproblem:?(Paras.10-11),(1)Ifironlevelsarelow,talkwithaphysiciantoseeifthedeficiencyshouldbecorrectedbymodifyingyourdietorbytakingsupplements(Para.10)(2)Selectbreadsandcerealswiththewordsiron-addedonthelabel(Para.11)(3)EatthefoodswithplentifulVitaminCtoenhancetheamountofironabsorbed.(Para.11),Back,Problem-Analysis-Solution(问题解决法),(4)Cookinironpans,asfoodcanderiveironfromthepanduringthecookingprocess.(Para.11)(5)Avoiddrinkingcoffeeorteawithmeals,sincesubstancesinthesedrinkscaninterferewithironbeingabsorbedintothebody.(Para.11),Back,Solutiontotheproblem:?(Paras.10-11),Problem-Analysis-Solution(问题解决法),返回,Evaluation:?(Para.12),返回,“Activewomenneedtobealotmorecarefulabouttheirfoodchoices.Ifyoupayattentiontowarningsignsbeforeironreservesaregone,youcanremedythedeficiencybeforeitreallybecomesaproblem.”,Back,Problem-Analysis-Solution(问题解决法),2.Quotation(引言法),Tosupporthisargument,theauthorquotesashardevidencetheremarksrespectivelyfromtheassociateprofessorofPurdueUniversity,RoseanneM.Lyle(Paras.2,3and12),anotherexpertatPurdue(Para.5),oneofthePurduestudydesigners,JohnL.Beard(Paras.8and9),andthesportsdietexpertNancyClark(Para.11).,Back,返回,Exercise,evenmoderateexercise,mayleadtoreducedironinthebloodofwomen.,Mainidea?,Devicesfordevelopingit?,Back,Back,GeneralConclusion:NowanewstudybyateamofPurdueUniversityresearcherssuggeststhatevenmoderateexercisemayleadtoreducedironinthebloodofwomen.,Illustration(举证法):,返回,Specificevidence:(1)Sportsmedicineexpertshaveobservedforyearsthatenduranceathletes,particularlyfemales,frequentlyhaveirondeficiencies.(Para.1)(2)“Wefoundthatwomenwhowerenormallyinactiveandthenstartedaprogramofmoderateexerciseshowedevidenceofironloss,”saysRoseanneM.Lyle,associateprofessoratPurdue.(3)Herstudyof62formallyinactivewomenwhobeganexercisingthreetimesaweekforsixmonthswaspublishedinthejournalMedicine(2)Womensmonthlybleedingisamajorsourceofironloss;(3)Plus,manyhealth-consciouswomenincreasetheirriskbyrejectingredmeat,whichcontainsthemosteasilyabsorbedformofiron.(4)Womenoftenexperienceadeficiencyasaresultoftheirefforttocontrolweight.(Para.4),此外，许多保健意识很强的女性面临更大的危险，因为他们拒绝食用牛羊肉，而这些肉中含有的铁质最容易被吸收。,Effect:(Para.4)Buttheratio(ofirondeficiencyinwomen)isevengreateramongactivewomen,affectingupto80percentoffemaleenduranceathletes.,Specificcausesfortheeffect:?,Causeandeffect(因果法),返回,Back,(1)Forawomanwhoalreadyhasapoorironstatus,anyadditionalironlossfromexercisemaybeenoughtotipherovertheedgeintoamoreseriousdeficiency.(Para.5)(2)Someironislostinsweat,and,forunknownreasons,intenseenduranceexerciseissometimesassociatedwithbleedingofthedigestivesystem.(3)Athletesinhigh-impactsportssuchasrunningmayalsoloseironthroughaphenomenonwheresmallbloodvesselsinthefeetleakblood.(Para.6),有些铁质随汗液流失。另外，由于未知的原因，高强度的耐力运动有时与消化系统内出血联系在一起。,运动员从事高强度的运动，比如跑步时，也可能因为足部细血管失血的现象而使铁质流失。,Theauthormakesclearboththeeffectsofirondeficiencyonpeopleshealthandtheimportanceofcheckingironreservestoactivepeople.,Mainidea？,Devicesfordevelopingit?,Back,General-specific(总分法),返回,Back,Generalstatement:(Para.7)Therearethreestagesofirondeficiency.,Specificstatements:?(Para.7),(1)Thefirstandmostcommonishavinglowironreserves,aconditionthattypicallyhasnosymptoms.(2)Fatigueandpoorperformancemaybegintoappearinthesecondstageofdeficiency,whennotenoughironispresenttoformthemoleculesofbloodproteinthattransportoxygentotheworkingmuscles.(3)Inthethirdandfinalstage,peopleoftenfeelweak,tired,andoutofbreathandexerciseperformanceisseverelycompromised.,到了缺铁的第二阶段，就会出现疲倦和力不从心，此时体内已没有足够的铁来形成血蛋白分子，将氧输至运动着的肌肉。,Refutation(批驳法),Typicalsentences:,“人们认为，只要不到第三阶段就不会有什么问题。这种看法是不对的。”帮助策划珀杜研究的约翰L.比尔德说。,Theauthorgiveshisadviceonhowtoremedyirondeficiency.,Mainidea？,Devicesfordevelopingit?,Back,(1)Thebestsourcesofironare_,_,and_.(2)Goodsourcesofotherformsofironinclude_,_,andsome_.,Exemplification(举例法):,返回,1)Theauthorgiveshisadvicethroughalistofexampl