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1、WORD格式.可编辑Unit2Custommakesallthingseasy.有个好习惯，事事皆不难。学习内容题材词数建议时间得分统计做题备忘PartAText1科普知识394/10Text2商业经济396/10Text3社会生活439/10Text4科普知识401/10PartB生态环境612/10PartC文化教育473/10PartADirections：Readthefollowingtexts.Answerthequestionsbloweachtextbychoosing[A],[B],[C]or[D].Text1In19
2、67,inresponsetowidespreadpublicconcernarousedbymedicalreportsofasbestos-relateddeaths,theNationalMedicalResearchCouncilorganizedcommitteeofinquirytoinvestigatethehealththreatsassociatedwiththeuseofasbestosinthebuildingindustry.Afterexaminingevidenceprovidedbymedicalresea
3、rchersandbuildingworkersandmanagement,theCouncilpublishedareportwhichincludedadvicefordealingwithasbestos.ThereportconfirmedthefindingsofsimilarresearchintheUnitedStatesandCanada.Exposuretorelativelysmallquantitiesofasbestosfibers,theyconcluded,wasdirectlyresponsiblefort
4、hedevelopmentofcancers,asbestosisandrelateddiseases.Takingintoaccountevidenceprovidedbyeconomistsandbuildingindustrymanagement,however,thereportassumedthatdespitetheavailabilityofothermaterials,asbestoswouldcontinuetoplayamajorroleintheBritishbuildingindustryformanyyears
5、tocomebecauseofitsavailabilityandlowcost.Asaresult,thecouncilgaveaseriesofrecommendationswhichwereintendedtoreducetheriskstothosewhomightbeexposedtoasbestosinworkingenvironments.Theyrecommendedthat,wherepossible,asbestosfreematerialsshouldbeemployed.Incaseswhereasbestosw
6、asemployed,itwasrecommendedthatitshouldbeusedinsuchawaythatloosefiberswerelesslikelytoentertheair.Thereportrecommendedthatspecialcareshouldbetakenduringworkinenvironmentswhichcontainasbestos.Workersshouldwearprotectiveequipmentandtakespecialcaretoremovedustfromtheenviron
7、mentandclothingwiththeuseofvacuumcleaner.Thereportidentifiedfivefactorswhichdeterminethelevelofriskinvolved.Thestateandtypeofasbestosiscriticaltodeterminingtheriskfactors.Inaddition,dustformationwasfoundtobelimitedwhereasbestoswasusedwhenwetratherthandry.Thechoiceoftools
8、wasalsofoundtoaffectthequantitiesofasbestosparticlesthatentertheair.Machinetoolsproducegreaterquantitie
