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1、高考专题辅导专题检测卷(二十)阅读理解(建议用时:25分钟)A体裁议论文题材禽流感的防治词数373Tiredness,coughing,arunnynoseandasorethroat—amongallsicknessesthereisprobablynonemorecommonthantheflu,whichweallgetnowandthen.However,birdfluisacompletelydifferentstory.Tenyearsago,theH5N1birdflusweptacross15countries,includingChina,withsufferersrepo
2、rtingchestpain,difficultybreathing,feverandseverecoughing.Morethan600peoplewereinfected,andabout60percentdied.NowanothertypeofbirdfluhitShanghaiandthreeneighboringprovinces,andthistimethevirusiscalledH7N9.BytheafternoonofApril11,thenewvirushadtakenninelivesoutof35infected,accordingtoXinhuaNewsAgenc
3、y.The“H”and“N”inthevirus’namereferstotwokindsofproteinsonthesurfaceofthevirus.Anychangeofthenumbersofthetwoproteinsindicatesanewmutation(变异).Mostofthemutationsonlyaffectbirds,suchaschickensandpigeons,anddon’tnormallyspreadtohumans.Butoncetheydo,theresultscanbedisastrous.“Anytimeananimalinfluenzavir
4、uscrossestohumans,itisacauseforconcern,”MalikPeiris,virologist(病毒学家)attheUniversityofHongKong,toldNaturemagazine.TaketheSARSepidemic(传染病)10yearsagoasanexample.-10-Thevirusbehindthediseaseisthoughttohavejumpedtohumansfromanimals.Theviruswasacomplete“stranger”tohumanbodies,whichhadn’tdevelopedanimmun
5、ityagainstit.ButthereissomethingmoreaboutthenewH7N9birdflu.UnliketheH5N1birdflu,whichcausesseveresicknessinbirds,theH7N9hasbeenevolvingundertheradar(悄悄地)sinceittravelsbetweenbirdswithoutcausingnoticeableillness.Thatmakesitdifficulttokeeptrackofthedisease.Thegoodnewsisthatthere’ssofarnosignthatthevi
6、rusisspreadingfrompersontoperson.Butsincethereisnovaccineforthediseaseyet,theWorldHealthOrganizationrecommendsthatyouwashyourhandsaftermeetingwithsickpeopleandbeforeandafteryoueatorpreparefood,andtheyalsosuggestavoidingcontactwithbirdsortheireggs.1.WhichofthefollowingstatementsisTRUEaccordingtothet
7、ext?A.TheH5N1birdfluturnedouttohavesomethingtodowiththeSARSepidemic.B.Morethan600peopleacrosstheworlddiedfromtheH5N1birdflutenyearsago.C.Mostofthemutationsoftheproteinsinthebirdfluvirusareharmfultobothbirds
