2017職稱英語考試押題衛(wèi)生類C級閱讀理解12Ahundredyearsago，lifeexpectancyindevelopedcountrieswasabout47:intheearly21stcentury,menintheUnitedStatesandtheUnitedKingdomcanexpecttolivetoabout74.Womentoabout80,andthese_____l_____arerisingallthetime.Whathasbrought_____2_____thesechanges?Whenwelookatthelife_____3_____ofpeoplel00yearsago,weneedtolookatthegreatest_____4_____ofthetime.Intheearly20thcentury,theseweretheacuteandoften_____3_____infectiousdiseasessuchassmallpox.Manychildrendiedveryyoungfromthesediseasesandothers,andtheweakandelderlywerealwaysatrisk.Inthe_____6_____worldthesediseasesarefar_____7_____today,andinsomecaseshavealmostdisappeared.Anumberof_____8_____haveledtothis:improvementsinsanitationandhygiene,thediscoveryanduseofantibiotics,which_____9_____bacterialdiseasesmuchlessdangerous,andvaccinations_____l0_____commondiseases._____11_____,people'sgeneralhealthhasimprovedwithimprovementsinourgeneralenvironment:cleanerair,bettermeansofpreservingfood，betterandwarmerhousing，andbetterunderstandingofnutrition.Genetically，weshouldallbeabletolivetoabout85but_____l2_____peopledolivelongertoday,therearestillsomebigkillersaroundthatarepreventingUSfromconsistentlyreachingthatage.Theproblemsthataffectpeopletodayarethemorechronicillnesses,suchasheartdiseaseandstrokes,andthose_____l3_____byviruses,suchasinfluenzaandAIDSl.Ofcourse,cancerisahugekilleraswell.Inmostcasesthesediseasesaffect_____l4_____people,butthereareworryingtrendsinthedevelopedworldwithproblemssuchasobesity_____l5_____moreheartdiseaseandillnessessuchasdiabetesatyoungerages.Thekillerstodaycanbeclassedas"lifestylediseases"，whichmeansthatitmaybepossibletohalttheirprogress.詞匯：Expectancyn.預期Acuteaaj急性的Infectiousadj.傳染性的Smallpoxn.天花Sanitationn.環(huán)境衛(wèi)生Hygienen.個人衛(wèi)生Antibioticn.抗生素Bacterialadj.細菌性的Vaccinationn.種痘，接種Preservevt.保藏，防止(食物)腐爛Nutrition