高中英語外刊閱讀語法填空December31奧密克戎毒株為何“需要關(guān)注”，現(xiàn)有防疫工具是否有效Omicron:everythingyouneedtoknowaboutnewCovidvariantWhatisitcalled?Thevariant（變異株）was1_____(initial)referredtoasB.1.1.529,butonFridaywasdesignated(命名)asavariantofconcern(VOC)bytheWorldHealthOrganizationbecauseofits“concerning”mutationsandbecause“preliminaryevidencesuggestsanincreasedriskofreinfection（再次感染）withthisvariant”.TheWHOsystemassignssuchvariantsaGreekletter,toprovideanon-stigmatising（不污名化）labelthatdoesnotassociatenewvariantswiththelocation2_____theywerefirstdetected.ThenewvarianthasbeencalledOmicron.

TheB.1.1.529variantwasidentifiedonTuesdayandhighlightedasaconcerndue3____itshighnumberofmutations(突變),whichcouldleadittoevade(逃避)immunity.Itwasalsolinkedtoasurge(激增)incasenumbersintheGautengprovinceofSouthAfrica,theUKHealthandSecurityAgencydescribingthevariantasthe“most4_____(worry)we’veseen”.

AlthoughinitiallylinkedtoGauteng,thevariantdidnotnecessarilyoriginatethere.The5_____(early)sampleshowingthevariantwascollectedinBotswanaon11November.Scientistssaythattheunusualconstellation（大量，系列）ofmutations(突變)suggestsitmayhaveemergedduringachronicinfectionofanimmunocompromised（免疫功能低下的）person,suchasanuntreatedHIV/Aidspatient.

Thevarianthasmorethan30mutationsonitsspikeprotein（刺突蛋白）–thekey6____(use)bythevirustounlockourbody’scells–morethandoublethenumbercarriedbyDelta.Suchadramaticchangehasraisedconcernsthattheantibodies(抗體)frompreviousinfectionsorvaccinationmaynolongerbewellmatched.

Scientistsareconcernedbythenumberofmutationsandthefactsomeofthemhavealreadybeenlinkedto7____abilitytoevadeexistingimmuneprotection.Thesearetheoretical(理論上的)predictions,though,andstudiesarerapidlybeingconducted8_____(test)howeffectivelyantibodiesneutralizethenewvariant.Real-worlddataonreinfectionrateswillalsogiveaclearerindicationontheextentofanychangeinimmunity.

Scientistsdonotexpectthatthevariantwillbeentirelyunrecognizable(無法識(shí)別)toexistingantibodies,justthatcurrentvaccinesmaygiveless9_____(protect).Soacrucialobjectiveremainstoincreasevaccinationrates,10_____(include)thirddosesforat-riskgroups.

keys:1initially2where3to4worrying5earliest6used7an8totest9protection10including

2未來10年770萬人或死于艾滋病Worldcouldfaceover7millionAIDS-relateddeathsoverthenext10yearsUNAIDS(聯(lián)合國艾滋病規(guī)劃置)issuedastarkwarningMondaythatifleadersfail1_____(solve)inequalities,theworldcouldface7.7millionAIDS-relateddeathsoverthenext10years.

Atleast300,000childrenwere2_____(new)infectedwithHIVin2020,oronechildeverytwominutes.

Another120,000childrendiedfromAIDS-relatedcausesduringthesameperiod,oronechildeveryfiveminutes.

“ProgressagainsttheAIDSpandemic,3_____wasalreadyofftrack,isnowunderevengreaterstrainastheCOVID-19crisiscontinuestorage,4_____(disrupt)HIVpreventionandtreatmentservices,schooling,violence-preventionprogrammesandmore.Wecannotbeforced5_____(choose)betweenendingtheAIDSpandemictodayandpreparingforthepandemicsoftomorrow.Theonlysuccessfulapproachwillachieveboth.Asofnow,wearenotontracktoachieveeither.”

Somecountries,includingsomewiththehighestratesofHIV,havemade6______(remark)progressagainstAIDS,illustratingwhatisfeasible(可行的).However,newHIVinfectionsarenotfallingfastenoughgloballytostopthepandemic,with1.5millionnewHIVinfectionsin2020andgrowingHIVinfectionratesinsomecountries.7_____(infect)arealsofollowinglinesofinequality.SixinsevennewHIVinfectionsamongadolescentsinsub-SaharanAfricaareoccurringamongadolescentgirls.COVID-19isundercuttingtheAIDSresponseinmanyplaces.ThepaceofHIVtestingdeclinedalmostuniformlyandfewerpeoplelivingwithHIVinitiatedtreatmentin2020in40of50countriesreportingtoUNAIDS.HIVpreventionserviceshavebeenimpacted—in2020,harmreductionservicesforpeople8_____usedrugsweredisruptedin65%of130countriessurveyed.

“9____isstillpossibletoendtheepidemicby2030,”affirmedUnitedNationsSecretary-GeneralAntónioGuterresinhisWorldAIDSDaymessage.“Butthatwillrequiresteppedupactionand10_____(great)solidarity(團(tuán)結(jié)).TobeatAIDS—andbuildresilienceagainstthepandemicsoftomorrow—weneedcollectiveaction.”keys:1tosolve2newly3which4disrupting5tochoose6remarkable7Infections8who9It10greater3Tree-climbingclasstakesrootinHubei爬樹課程在湖北扎根Atree-climbingclass1_____(grow)popularamongstudentsattheSportInstituteofHubeiUniversityrecently,asmoreandmorepeopleareshowinginterest2____learningthetricksofthetradeforscalingtimber(爬樹).AtaclassonMonday,LuJunpeishowed16studentssomeofthe3_____(important)techniques.Afterputtingonahelmet,fasteningstrapsandtyingropeknots,Luspent4_____(little)thaneightminutes5_____(reach)thetopofa25-metertree.Becausemoreandmorestudentsareshowinginterest,theschoolplans6_____(add)moreseatstotheclasstoallowmorestudentstolearnandpractice,saidLu,7_____isalsoamemberoftheEnshiBlueSkyRescueTeam.HubeiUniversityisoneofthefirst8_____(university)i