voa话题七选五day12每日一练-2025届高三英语一轮复习

Passage1第一篇：三文鱼标签误标现象调查SalmonisapopularchoiceamongconsumersintheU.S.,butanewstudyrevealsaconcerningissue.1._____ResearchshowsthatasignificantportionofsalmonsoldinSeattle-areaestablishmentsismislabeled.Thestudyfocusedonbothgrocerystoresandsushirestaurants.Ingrocerystores,outof67samples,9weremislabeled,about13percent.2._____However,themislabelingingrocerystoreswasnotalwaysinfavorofthestores,andtherewerenocasesoffarmedsalmonbeingwronglylabeledaswild.Incontrast,thesituationinrestaurantswasmoresevere.3._____Outof52sushisamples,12weremislabeled,a23percentrate.Themainproblemwasthatfarmedsalmonwasoftensoldaswild-caught,whichdeceivescustomersandmayleadtothempayingahigherpriceforadifferentproduct.Toconductthestudy,TracieDelgadoandherstudentstookanactiverole.4._____Theyvisitedbusinesses,collectedsamplesfollowingstrictprotocolstoavoidcontamination,andthenusedgeneticanalysistechniques.Theyanalyzedthecytochromecoxidasegene,whichisusefulfordistinguishingbetweendifferentsalmonspeciesduetoitsslightvariationsamongspecies.Althoughthereareregulationslikethe2013state-levellegislation,themislabelingproblemstillpersists.5._____Grocerystoresseemtohaveimproved,butrestaurantsarestilllaggingbehind.Moreinspectionsareneededtoaddressthisissueeffectively.A.Itseemsthatthemislabelingisintentionalinsomecases.B.Therateofmislabelinginrestaurantsisrelativelyhigh.C.Theyusedadvancedmethodstoidentifythesalmonspecies.D.Salmonishighlyconsumed,butitslabelingisaproblem.E.Themislabelingrateingrocerystoresisnotnegligible.F.Thestudyaimedtouncoverthetruthaboutsalmonlabeling.G.Washingtonstatehasrelativelybetterlabelingconditions.答案：1.D2.E3.B4.C5.G解析：1.开篇提到三文鱼受欢迎但有新研究揭示问题，D项“三文鱼消费量大，但标签存在问题”能概括主旨，故填D。2.讲杂货店的误标情况，E项“杂货店的误标率不可忽视”符合，故填E。3.对比餐馆情况更严重，B项“餐馆的误标率相对较高”呼应上文，故填B。4.提到研究人员的做法，C项“他们使用先进方法鉴定三文鱼品种”说明研究手段，故填C。5.虽有法规但问题仍存，G项“华盛顿州的标签情况相对较好”与后文杂货店和餐馆情况相呼应，故填G。Passage2第二篇：三文鱼误标背后的原因与影响Themislabelingofsalmonisnotasimplemistakebuthasmultipleaspectstoconsider.1._____Insomegrocerystores,mislabelingmightoccurduetoworkers'unfamiliaritywithdifferentsalmonspeciesormix-upsduringprocessing.TracieDelgadobelievesthattherecouldbehonesterrors.2._____Despitetheidentifiabletrademarksonwholefishandtheintactarrivaloffishinstores,mistakescanstillhappen.However,inrestaurants,themislabelingtrendseemsmoredeliberate.3._____Presentingfarmedsalmonaswild-caughtisawaytoincreaseprofitsattheexpenseofcustomers.Thegeneticanalysisusedinthestudyiscrucial.4._____Bylookingatthecytochromecoxidasegene,researcherscanaccuratelytelldifferentsalmonspeciesapart.Butthisanalysisalsoshowsthatthesourceofmislabelingishardtopinpoint.Itcouldbeattherestaurantlevelorhigherupinthesupplychain,likewithdistributors.Themislabelingofsalmonhasbroaderimpacts.5._____Itcanmisleadconsumerswhowanttomakeresponsiblechoicesandalsoaffectfisheryconservationeffortsasitdistortstheactualsupplyanddemanddataofdifferentsalmonspecies.A.Ithelpstorevealthetruenatureofthesalmon.B.Thereasonsformislabelingvaryindifferentplaces.C.Thegeneanalysishasitslimitationsthough.D.Workers'mistakesarethemaincauseofmislabeling.E.Itcanhaveconsequencesforbothconsumersandtheindustry.F.Themislabelinginrestaurantsismoreprofit-driven.G.Identifyingthesourceofmislabelingiscomplex.答案：1.B2.A3.F4.G5.E解析：1.提到三文鱼误标原因多方面，B项“不同地方误标的原因不同”能总领下文，故填B。2.讲杂货店误标可能因工人不熟悉等，A项“它有助于揭示三文鱼的真实情况”说明基因分析作用，与后文呼应，故填A。3.说餐馆误标更蓄意，F项“餐馆的误标更受利润驱动”符合，故填F。4.基因分析虽能区分品种但难确定误标源头，G项“确定误标源头很复杂”符合，故填G。5.误标有更广泛影响，E项“它对消费者和行业都有后果”总结影响，故填E。Passage3第三篇：解决三文鱼标签问题的探讨Theissueofmislabeledsalmonhasdrawnattention,andeffortsareneededtoaddressit.1._____Thecurrentsituationshowsthatalthoughthereislegislation,ithasnotcompletelysolvedtheproblem.InSeattle,thestudyfounddifferentmislabelingratesbetweengrocerystoresandrestaurants.2._____Grocerystoreshavearelativelylowermislabelingrate,whichmightbeduetothe2013policythatrequirescorrectlabeling.However,restaurantsstillhaveasignificantmislabelingproblem,withfarmedsalmonbeingmisrepresentedaswild-caught.Toimprovethesituation,moreinspectionsareproposed.3._____Thiscanhelptoensurethatbusinessesfollowthelabelingregulationsandreducetheoccurrenceofmislabeling.Consumersalsoplayarole.4._____Theyshouldbemoreawareoftheissueanddemandaccuratelabeling.Whentheyknowwhattheyareeatingandpayingfor,theycanmakemoreinformedchoices.Inaddition,theindustryasawholeneedstotakeresponsibility.5._____Fromfishsupplierstodistributorsandrestaurants,allpartiesshouldworktogethertoensuretheintegrityofsalmonlabeling,whichisbeneficialforbothconsumersandthesustainabledevelopmentofthefishery.A.Consumers'awarenessiscrucialinthisprocess.B.Themislabelingproblemismoreseriousinrestaurants.C.Legislationaloneisnotenoughtosolvetheproblem.D.Theindustryshouldcooperatetosolvetheissue.E.Inspectionscanbeaneffectivewaytomonitor.F.Thedifferenceinmislabelingratesissignificant.G.