阅读理解Theinfluenzavirus(流感病毒)orthefluisspreadfrompersontopersonintheairwhenaninfectedpersoncoughsorsneezes.Thereare3typesoftheflu:-TypeAvirusescaninfectpeoplebirdspigshorsesseal

　　阅读理解

　　Theinfluenzavirus(流感病毒)orthefluisspreadfrompersontopersonintheairwhenaninfected

　　personcoughsorsneezes.Thereare3typesoftheflu:

　　-TypeAvirusescaninfectpeoplebirdspigshorsessealswhalesandotheranimalssuchasavianflu

　　orbirdflu.

　　-TypeBvirusesinfectpeopleandresultinsmalleroutbreaks(爆发).PeopleinfectedwithtypeB

　　virusesareoftenhospitalizedwithhigherdeathrates.

　　-TypeCvirusescausemildillnessinhumanswithouttheonsetofanepidemic(流行病).

　　Mostpeoplearefamiliarwiththesymptomsoftheflubuttheycanbemistakenforaseverecold.Theflu

　　infectionisfarmoreseriousandcancauseseverehealthcomplications(并发症).Therearemanyviral

　　infectionsthatcancauseflulikesymptoms.Itisbettertovisityourdoctorsootherpossibilitiescanbe

　　ruledoutbeforeyourobtainingtreatment.

　　Thefluvirusattacksthebody'scellsandchangesintodifferentformswhichiswhypeoplewhohave

　　receivedtheflushot(流感疫苗接种)maystillgetillwiththeflu.Theinfluenzavirusistransmitted_

　　throughdirectcontactwithinfectedpersonssuchasbyinhaling(吸入)dropletswhentheyhavecoughed

　　orsneezed.Itcanalsobespreadbyhandlingobjectssuchasdoorknobsandtelephonereceiversthatan

　　infectedpersonhasbeenincontactwith.

　　Ifyouhavetheflugetplentyofbedrestanddrinklotsoffluids.Mostpeoplerecoverfromthefluin

　　onetotwoweeks.Doctorsoftenrecommendfluvaccines(疫苗)forhighriskgroupssuchasyoung

　　childrentheelderlythosewithchronic(慢性的)diseasesweakimmunesystemsorprofessionalsworkingwithhighriskgroups.

　　1.Whichofthefollowingistrueaboutbirdflu?

　　A.Itisadiseasewhichcanspreadamonghumansandanimals.

　　B.Onlyanimalsandbirdsbutnothumanscanbeinfectedbythiskindofvirus.

　　C.Thiskindofdiseasecancausehigherdeathratesamonghumans.

　　D.Birdfluwon'tcausetheoutbreakofanepidemicamonghumans.

　　2.Whenyoucoughorsneezeapropersuggestiongivenbythewriteristo________.

　　A.takesomemedicineatonce

　　B.seeadoctortomak