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第PAGE\*MERGEFORMAT3页共NUMPAGES\*MERGEFORMAT3页 2021年12月英语四级模拟试题答案 PartIWriting解题思路：Recently,itisnotuncommontoseemanyfoodsafetyproblems.Contaminatedfoodhasdonegreatharmtopeople’slife。Firstandforemost,contaminatedfoodindispensablyposesagreatthreattopeople’shealth.Itbringsbigtragediestomanyfamilies.Somelosttheirlives;someothersgotseriouslyillaftertheyatecontaminatedfood…Meanwhile,foodcontaminationhasaprofoundimpactonhealthyandfaircompetitioninmarketeconomy…Inmyopinion,lackofeffectivesupervisioncontributesalottofoodcontaminationproblem.Asaresult(consequently)strictlawsshouldbepassedandexecutedtoregulatethisurgentsocialproblem.Furthermore,manufacturersshouldalwaysbearinmindthesenseofpublicresponsibilitywhentheyareseekingforprofitthroughtheirproducts…PartIIFastReading1------7ACBCDDC8.suggestiontherapy9.theyarefascinatedbyit10.acceptit/acceptthemethodPartIIIListeningComprehensionSectionA11-15DBACB16-20CDCDB21-25BCAADSectionB26-30DABAC31-35BDBBBSectionC36.effort37.officials38.negotiate39.balanced40.competition41.exchange42.process43.environmental44.These“greenhousegases”trapheatintheatmosphereandareblamedforchangingtheworld’sclimate。45.Butcurrently,nationsproducingonly44percenthaveapprovedtheProtocol.Russiaproducesabout17percentoftheworld’sgreenhousegases。46.TojointheW.T.O.,acountrymustreachtradeagreementswithmajortradingcountriesthatarealsoW.T.O.members。PartIVReadinginDepthSectionA：47---56KOLENGICADSectionB57---66CBADDCDCBDPartVCloze67---86CDABBCDBCDACBDCDBACCPartVITranslation87.Wecouldn’thaveachievedsuchgreatprogressinscienceandtechnology。88.notuntilhearrivedatthestation。89.otherthantheyappealedtohiseyes。90.dependsonwhetherornotwecanpreserveourenvironmentwell。91.isconfinedtothosewhohaveclosecontactwiththepatients。
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