2013年最新职称英语考试用书_概括大意练习为帮助考生有效备考2013年HYPERLINK"http://www.123zcyy.com"\t"_blank"职称英语考试，123职称英语网小编整理了HYPERLINK"http://www.123zcyy.com/shiiti.html"\t"_blank"职称英语考试试题，希望对您学习职称英语有所帮助！FaceMasksMayNotProtectfromSuper-Flu1IFasuper-flustrikes,facemasksmaynotprotectyou.Whetherwidespreaduseofmaskswillhelp,orharm,duringthenextworldwidefluoutbreakisaquestionthatresearchersarestudyingfuriously.Noresultshavecomefromtheirmaskresearchyet.However,thegovernmentsayspeopleshouldconsiderwearingthemincertainsituationsanyway,justincase1.2Butit’saquestionthepublickeepsaskingwhilethegovernmentaremakingpreparationsforthenextflupandemic.SotheCentersforDiseaseControlandPrevention(CDC)cameupwith2preliminaryguidelines.“Wedon’twantpeoplewearingthemeverywhere,”saidtheCDC.“Theoverallrecommendationreallyistoavoidexposure.”3Whenthat’snotpossible3,theguidelinessaytoconsiderwearingasimplesurgicalmaskifyouareinoneofthethreefollowingsituations.First,you’rehealthyandcan’tavoidgoingtoacrowdedplace.Secondtyou’resickandthinkyoumayhaveclosecontactwiththehealthy,suchasafamilymembercheckingonyou4.Third,youlivewithsomeonewho’ssickandthusmightbeintheearlystagesofinfection,butstillneedtogoout.4Influenzapandemicscanstrikewhentheeasy-to-mutatefluvirusshiftstoastrainthatpeopleneverhaveexperienced.Scientistscannotpredictwhenthenextpandemicwillarrive,althoughconcernisrisingthattheAsianbirdflumighttriggeroneifitstartsspreadingeasilyfrompersontoperson.5Duringtheflupandemic,youshouldprotectyourself.Avoidcrowds,andavoidclosecontactwiththesickunlessyoumustcareforsomeone.Whyaren’tmasksaddedtothisself-protectionlist?Becausetheycanhelptrapvirus-ladendropletsflyingthroughtheairwithacoughorsneeze.Simplesurgicalmasksonlyfilterthelargerdroplets.Besides,theCDCisafraidmasksmaycreateafalsesenseofsecurity.Perhapssomeonewhoshouldhavestayedhomewoulddonanill-fittingmaskandhoponthesubway5instead.6Nordoesfluonlyspreadthroughtheair6.Say7someonecoversasneezewithhisorherhand,thentouchesadoorknoborsubwaypole8.Ifyoutouchtha