【编者按】精品学习网小编总结归纳，2013年职称英语《卫生类》补全短文：TheSpreadofMicroorganisms，希望对考生备考有帮助。
TheSpreadofMicroorganisms
Thereisscarcelyaplaceonearthwhichisnaturallyfreeofmicroorganisms(微生物).46.Butonexternalbodysurfaces,onliningmembranes(内膜)andinsidetubesandorgansthatareconnectedwiththeoutside—suchasthemouth,throat,nose,andlargeintestine(肠)—bothharmlessandpathogenic(病原的)microbes(微生物)liveinlargenumbers.47.Ifthesenaturaldefensesaresound,apersonmayconcealmanymicrobeswithoutilleffect.However,ifhisresistancebecomeslowered,aninfectioncanresult.
Microbesarespreadaboutthroughanalmostinfinitevarietyofmeans.48.Themorecrowdedtheconditions,thegreaterthechancesofepidemics(流行病)breakingout.49.
Althoughmicrobescannotfly,thedustoftheairisalivewiththem.Inclosequarterstheatmosphereisfurtherpollutedbybacteria-loadedtinydropsdischargedbycoughingandevennormalconversation.Pathogenicmicrobesarealsospreadbyrats,mice,fliesandmosquitoes.50.Inslumareasthereisoftenacombinationofcrowdedconditionsandpoorsanitation(环境卫生).Inaddition,manyoftheinhabitantshaveloweredresistancebecauseofshortageoffoodandotherundesirableunhealthypractices.Asaresult,epidemicsarelikelytobegininthesedistricts.
Allcivilizedsocietiesestablishandenforcemeasuresdesignedtoprotectthehealthoftheirpopulations.Mostofthesepracticesareconcernedwithpreventingthespreadofthepathogenicorganisms
ATheatmosphereisacarrierofmicroorganisms来源：http://www.hxen.com
BOneexceptionistheinteriorofnormalbodytissue
CMicrobialgrowthisfurtherhelpedbythewidespreadpresenceofdirtandthelackofsunlight
DThebodyhasnaturaldefensesagainsttheseorganisms
EThebodyhasnodefensesagainsttheseorganisms
FThesimplestwayisbyperson-to-personcontact
(46)____(1.1)____(47)____(1.2)____(48)____(1.3)____(49)____(1.4)____(50)____(1.5)____
音频解析：
1.1
正确的答案是:B
1.2
正确的答案是:D
1.3恒星英语－http://www.hxen.com
正确的答案是:F
1.4
正确的答案是:A
1.5
正确的答案是:C