托福TPO52綜合寫作題目及范文（附解析）

托福TPO52綜合寫作題目及范文（附解析）托福TPO52綜合寫作題目及范文(附解析)TPO52綜合寫作的閱讀要點(diǎn)內(nèi)容為蔗糖可能帶來許多健康風(fēng)險(xiǎn)，當(dāng)作為糖的替代品。今天給大家?guī)韺懽魉悸方馕黾胺段?，希望對大家有幫助。托福TPO52綜合寫作題目聽力文本：M:Nowlistentopartofalectureonthetopicyoujustreadabout:M:Manystudieshavefoundsucralosetobeperfectlysafeforpeopletoconsume.Anditisusefulforpeoplewhoaretryingtoloseweight.Thereading’sargumentsagainstusingsucralosecanallbechallenged.First,aboutsucraloseaffectingthethymus.Ifyoulookcloselyatthestudiesofsucraloseconsumption,therewerenoeffectsontheratsatalluntiltheywereeatingextremelylargequantitiesofsucralose.Inorderforahumantoeattheequivalentamountsthataffectedtheratsbeingstudied,ahumanwouldhavetoconsumeabout4000packetsofsucraloseperdayforamonth.Second,sure,someorganochlorinesaretoxic.Iftheyareconsumed,theyaredigestedandstoredinfattissue,andtheycontinuetobuildupinthefattissuestilltheyreachtoxiclevels.Butstudiesshowsucraloseisabitdifferentfromtheotherorganochlorines.Sucraloseisnotabsorbedbythedigestivesystemverywellandsoitdoesnotaccumulateinthebody’sfattissue.Sincesucraloseisnotabsorbedwellbythedigestivesystemanddoesn’tbuilduptodangerouslevelsinfattissue,itisunlikelytohavethetoxiceffectthattheotherorganochlorinesdo.Finally,thereistheargumentthatmanypeoplewhouseartificialsweetenersintheirdrinksendupeatinglotsofrealsugarinfoodlikecake,andsotheynegatethebenefitsofusingthesweetener.Well,thatargumentmayholdtrueformanyartificialsweetenersbutsucralosehasauniquepropertythatmakesitdifferent.Mostartificialsweetenersbreakdowniftheyareheatedtoomuch,butsucralosedoesnotbreakdownwhenheated.Thatmeansthatunlikeothersweeteners,sucralosecanbeusedtobakethings,likecakesandcookies,forexample.Peoplecravingsomethingsweetcanturntocakesorcookiesbakedwithsucralose,whichhelpsthemkeeptheirdietsontrack.M:Summarizethepointsmadeinthelecture,beingsuretoexplainhowtheychallengethespecificpointsmadeinthereadingpassage.閱讀文本：ReadingSucraloseisanartificialsweetenerthatisusedinplaceofnaturalsugar.Manypeopleusesucraloseasasubstituteforsugartocontroltheirweight.However,theremaybeseveralhealthrisksassociatedwithsucralose.Also,itisnotclearwhethersucraloseactuallyhelpspeopleloseweight.First,researchersinAustraliadidstudiesonratsanddiscoveredthatsucraloseconsumptioncausedshrinkingofthethymusinrats.Thethymusisanorganthatiscrucialtomaintainingahealthyimmunesystem;inhumansitisparticularlyactiveinchildhood.Ifsucralosehassimilareffectsonhumans,thenlong-termuseofsucralosecouldcauseharmtotheimmunesystem,especiallyinchildren.Second,sucraloseiscreatedbyreplacingsomeoftheatomsinnaturalsugarmoleculeswithchlorine.Thismeanssucralosebelongstoagroupofchemicalscalledorganochlorines,whichisanothercauseforconcern.Organochlorinesareknowntobetoxictoplantsandanimals,includinghumans.Someorganochlorinesareevenusedaspesticides.Sucraloseischemicallysimilartothesetoxicchemicals,sotheremaybeariskofpoisoningifsucralosebuildsupinhumanbodytissue(infattissue,forexample).Third,substitutingartificialsweetenersforrealsugarincoffee,tea,andsoftdrinksoftendoesnothelppeopleloseweight,sinceitreinforcesthehabitofenjoyingsweetfood.Whenpeopleuseartificialsweetenersintheirdrinks,theirappetiteforsugarremainsstrong,andtheysatisfytheirsweetnesscravingsbyeatinggreaterportionsoffoodscontainingrealsugar,suchascakesorcookies.Sucheatinghabitscanpreventthemfromachievingtheirgoaloflosingweight.Summarizethepointsmadeinthelecture,beingsuretoexplainhowtheysupport/contradictspecificpointsmadeinthereadingpassage.答題思路：1.閱讀要點(diǎn)概括：Mainpoint:Sucralosemaybringaboutmanyhealthriskswhenusedasasubstituteforsugar.Subpoint1:Sucralosemaycauseharmtotheimmunesystem.Subpoint2:Theremaybeariskofpoisoningifsucralosebuildsupinhumanbodytissue.Subpoint3:Substitutingartificialsweetenersforrealsugardoesnothelppeopleloseweight.2.聽力要點(diǎn)概括：Mainpoint:Sucraloseisperfectlysafeforpeopletoconsume.Subpoint1:Itrequiresaconsumptionofextremelylargequantitiesofsucralosetoaffectthethymus.Subpoint2:Sucralosedoesnotaccumulateinthebody’sfattissuesothatitisunlikelytohavethetoxiceffect.Subpoint3:Peoplecanusesucralosetoreplacesweetwhilekeeptheirdietsontrack.范文：Thespeakerrebutsthereading’sargumentsbydebunkingtheexaggeratedtestedsideeffectonthehumanbody,thehastygeneralizationthatsucraloseisproventoxic,andunwarrantedclaimsthatSucralosecanincreaseone’ssugarintake.ThespeakerbeginsbystatingthatSucralosedoesaffectthethymus,butonlywhentheindividualconsumesaverylargequantityofit,over4000packetsperday.Despitetheclaimfromthereadingthatsucralosemightexertsimilardetrimentaleffectsonahumanthymusgiventheconclusivesideeffecthasbeenwitnessedinrats,theprofessorarguesSucralosecanonlyposeathreattoone’shealthundermassusage.ContrarytothebeliefinthepassagethatitbelongstoagroupoftoxicchemicalscalledOrganochlorines,SucralosehasbeenshowntoactdifferentlythantraditionalOrganochlorines.Theprofessorarguesthatpeoplehaveahardtimefullydigestingitanditdoes