托福TPO52综合写作题目及范文（附解析）.docx

托福TPO52综合写作题目及范文（附解析）.docx

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托福TPO52综合写作题目及范文（附解析）

托福TPO52综合写作题目及范文（附解析）

TPO52综合写作的阅读要点内容为蔗糖可能带来许多健康风险，当作为糖的替代品。

今天给大家带来写作思路解析及范文，希望对大家有帮助。

托福TPO52综合写作题目

听力文本：

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.Mostartificialsweetenersbreak

downiftheyareheatedtoomuch,butsucralosedoesnotbreakdownwhenheated.Thatmeansthatunlikeothersweeteners,sucralosecanbeusedtobakethings,likecakesandcookies,forexample.Peoplecravingsomethingsweetcanturntocakesorcookiesbakedwithsucralose,whichhelpsthemkeeptheirdietsontrack.

M:

Summarizethepointsmadeinthelecture,beingsuretoexplainhowtheychallengethespecificpointsmadeinthereadingpassage.

阅读文本：

Reading

Sucraloseisanartificialsweetenerthatisusedinplaceofnaturalsugar.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,beingsuretoexplainhowthey

support/contradictspecificpointsmadeinthereadingpassage.

答题思路：

1.阅读要点概括：

Mainpoint:

Sucralosemaybringaboutmanyhealthriskswhenusedasasubstituteforsugar.

Subpoint1:

Sucralosemaycauseharmtotheimmunesystem.

Subpoint2:

Theremaybeariskofpoisoningifsucralosebuildsupinhumanbodytissue.

Subpoint3:

Substitutingartificialsweetenersforrealsugardoesnothelppeopleloseweight.

2.听力要点概括：

Mainpoint:

Sucraloseisperfectlysafeforpeopletoconsume.

Subpoint1:

Itrequiresaconsumptionofextremelylargequantitiesofsucralosetoaffectthethymus.

Subpoint2:

Sucralosedoesnotaccumulateinthebody’sfattissuesothatitisunlikelytohavethetoxiceffect.

Subpoint3:

Peoplecanusesucralosetoreplacesweetwhilekeeptheirdietsontrack.

范文：

Thespeakerrebutsthereading’sargumentsbydebunkingtheexaggeratedtestedsideeffectonthehumanbody,thehastygeneralizationthatsucraloseisproventoxic,andunwarrantedclaimsthatSucralosecanincreaseone’ssugarintake.

ThespeakerbeginsbystatingthatSucralosedoesaffectthethymus,butonlywhentheindividualconsumesaverylargequantityofit,over4000packetsperday.Despitetheclaimfromthereadingthatsucralosemightexertsimilardetrimentaleffectsonahumanthymusgiventheconclusivesideeffecthasbeenwitnessedinrats,theprofessorarguesSucralosecanonlyposeathreattoone’shealthundermassusage.

ContrarytothebeliefinthepassagethatitbelongstoagroupoftoxicchemicalscalledOrganochlorines,SucralosehasbeenshowntoactdifferentlythantraditionalOrganochlorines.Theprofessorarguesthatpeoplehaveahardtimefullydigestingitanditdoesnotbuildupinthebody,thereforeitismuchlesstoxic.Thisdirectlychallengesthefundamentaltheoryinreading.

Lastly,theprofessorcastsdoubtonthevalidityoftheassumptionthatsucralosecanencouragebingeintakesofsweetfood.Thereadingreasonsthatsucralosecanbuildagrowingrelianceonsweetness,thusfurtherdamagingone’shealth.

However,thespeakermaintainsthattheverynatureofSucralosecanendureahighheatingtemperature,thusservingasaperfectcandidatetoreplaceartificialsweeteners.InthatsenseanyunfairconcernoverSucralosebeingagatewaysugarinducerwouldbegroundless.