首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
查看本题答案
包含此试题的试卷
国家统考科目《问答集》真题及答案
点击查看
你可能感兴趣的试题
热门试题
更多
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.18
DespitethedoubtsanddespitecomplaintsfromshopownersLondon’scongestioncharge--introducedinFebruary2003--hasmanagedtoeasethegridlockinthecitycentre.Trafficisdownby18%jamsby30%.Thescheme’sbiggestweaknessisthatitiscrude:driverspay￡8$14toenterthezonebetween7amand6:30pmregardlessofhowcongestedtheroadsareorhowlongtheystay. Soroad-pricingfansarewatchingtrialsbyTransportforLondonTfLofanewdetectionsystemcalledtag-and-beaconwithinterest.UndersuchaschemeusedinSingaporeandonsomeEuropeanroadscarsarefittedwithelectronictagsthatarereadbyroadsidemasts.IfthetrialissuccessfulTfLsaysthatthecitycouldswitchtothesystemoncethecontracttorunthecongestionchargeisre-letin2009. Currentlycamerasareusedtoreadlicenseplatesandtrackmotorists.Theyarenotalwaysreliable:anindividualcameraidentifiesonlyaround70%ofcars.Mostdrivengetphotographedmorethanoncewhichbooststhesystem’seffectivenesstoover95%butthatstillleavesseveralthousandvehiclesperdaywhosedetailsmustbelaboriouslycheckedbyhand.Tag-and-beacontechnologyismuchmoreaccuratewithanidentificationrateofover99%. TfLsaysthetrialispartlydesignedtoseewhetherthenewsystemcouldallowdriverstopaychargesbydirectdebit.Thatwouldbepopularwithmotoristswhocomplainthatthecurrentpaymentsystemisunfriendly:thetollforaday’stravelmustbepaidmanually--onlinebyphoneorinashop--bymidnightwithsteepfinesleviedonforgetfuldrivers. Moreprecisedetectionalsoallowsformoreprecisioninpolicyandroad-pricingenthusiastsseeradicalpossibilitiesahead.TfLsaysitisconsideringusingthenewtechnologytochargedriverseachtimetheycrossthezoneboundaryuptoadailymaximuminsteadofpayingonceforanentireday’stravel.Thatwouldbecheaperfordriverswhomakefewtripsintothezonealthoughdriverswhospendalongtimetrundlingaroundwithoutleavingtherebycausingthemostcongestionwouldgetofflightlytoo. Furtherrefinementsmaybepossible.Thecurrentsystemhascuttrafficmostdrasticallyinthemiddleofthedaywhencongestionisatitslowest.Demandforroadspacewouldbettermatchsupplyifchargeswerevariable--highatthebusiesttimesofdayandlowinquietperiods. Suchatime-sensitivevariable-chargingschemeusingatag-and-beaconsystemwasendorsedlastyearbyBobKileytheTfL’sbosswhoalsosaidthathewantedtoextendthecongestionchargetootherpartsofLondon.ThatwouldbecontroversialandMr.Kiley’sunderlingswerequicktoinsistthathismusingswerenotofficialpolicy.ButtheoriginalschemewascontroversialtooyetKenLivingstoneLondon’smayoranditsbiggestbackerwasre-electedafterintroducingit.Itwouldbeashameiftimiditytookholdnow Fromparagraph1weknowthatLondon’scongestionchargescheme
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.10
CouldHIVthevirusthatcausesAIDSbeweakeningTheresultsofastudyconductedinBelgiumattheInstituteofTropicalMedicineinAntwerpseemtosuggestthatinonecorneroftheworlditmightbe.ThereportpublishedinthelatestissueofAIDSaspecialistjournalconcludesthatHIV’sabilitytoreplicateknowntechnicallyasitsvirulencemayhavedecreasedsincethestartofthepandemic.KevinAdentheleadauthorofthepaperstressesthatthestudyisbasedonasmallsetofsamplesanddoesnotprovethatHIV’svirulenceisattenuatingaroundtheworld.Howeveritdoesoffernewinsightsintotheevolutionofthedisease. Dr.Arienlookedat24bloodsamplescollectedfromuntreatedpatientsattendinganHIV/AIDSclinicinAntwerp.Adozenofthesesamplesweretakenbetween1986and1989;theother12werecollectedbetween2002and2003.Firstheanalyzedthesamplestofindtheirviralloadthenumberofvirusparticlespercubiccentimeterandthesubtypeofvirusinvolved.InEuropeandNorthAmericathepredominantsubtypeisB;insub-SaharanAfricawheretheepidemicisatitsworstthepredominantsubtypeisC.MostofDr.Arien’ssampleswereofsubtypeB.Havingdonethisanalysishepairedthesamplesoffforaseriesofreplicative"duels".Eachsamplefromtheearlierserieswasmatchedwiththemostsimilaronefromthelaterseriesandtheywereplacedinidenticalcellculturestoseewhichwouldmultiplythemost.Theresultwasthat75%ofthevirusesfrom2002-03werelessvirulentthanapparentlysimilarcounterpartsfrom1986-89--astatisticallysignificantobservation. Dr.Arien’scautionissensibleatleastuntilsomeonereplicatestheworkelsewhere.Buthisconclusionisnotnecessarilysurprising.Suchviralattenuationasitisknownisonewaythatvaccinesareproduced. Whatcausesattenuationinwildvirusesthoughisamatterofspeculation.DrArienbelievesthatinthiscasetheattenuationcouldbetheresultofwhathecalls"serialgeneticbottlenecks"duringtransmissionfromhosttohost.Theseacttoreducethegeneticdiversityandthusthereplicativefitnessofthevirus.GeneticdiversityisknowntobeanimportantcomponentofHIV’svirulence.Butwhatmightcausethebottlenecksisstillunclear. AsecondreasonforcautionbesidesthesmallsizeofthestudyisasGeoffreyGarnettaprofessorofmicroparasiteepidemiologyatImperialCollegeLondonpointsoutthattheabilityofavirustoinfectcellsinatest-tubeisnotthesameasitsabilitytocausediseaseanddeathinahumanhost.NeverthelessDrAden’sresultisintriguingandsurelyworthfollowingupinalargerpieceofresearch. BysayingDr.Arien’scautionissensibleLine1Paragraph3theauthorimpliesthat
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.2
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.20
DespitethedoubtsanddespitecomplaintsfromshopownersLondon’scongestioncharge--introducedinFebruary2003--hasmanagedtoeasethegridlockinthecitycentre.Trafficisdownby18%jamsby30%.Thescheme’sbiggestweaknessisthatitiscrude:driverspay￡8$14toenterthezonebetween7amand6:30pmregardlessofhowcongestedtheroadsareorhowlongtheystay. Soroad-pricingfansarewatchingtrialsbyTransportforLondonTfLofanewdetectionsystemcalledtag-and-beaconwithinterest.UndersuchaschemeusedinSingaporeandonsomeEuropeanroadscarsarefittedwithelectronictagsthatarereadbyroadsidemasts.IfthetrialissuccessfulTfLsaysthatthecitycouldswitchtothesystemoncethecontracttorunthecongestionchargeisre-letin2009. Currentlycamerasareusedtoreadlicenseplatesandtrackmotorists.Theyarenotalwaysreliable:anindividualcameraidentifiesonlyaround70%ofcars.Mostdrivengetphotographedmorethanoncewhichbooststhesystem’seffectivenesstoover95%butthatstillleavesseveralthousandvehiclesperdaywhosedetailsmustbelaboriouslycheckedbyhand.Tag-and-beacontechnologyismuchmoreaccuratewithanidentificationrateofover99%. TfLsaysthetrialispartlydesignedtoseewhetherthenewsystemcouldallowdriverstopaychargesbydirectdebit.Thatwouldbepopularwithmotoristswhocomplainthatthecurrentpaymentsystemisunfriendly:thetollforaday’stravelmustbepaidmanually--onlinebyphoneorinashop--bymidnightwithsteepfinesleviedonforgetfuldrivers. Moreprecisedetectionalsoallowsformoreprecisioninpolicyandroad-pricingenthusiastsseeradicalpossibilitiesahead.TfLsaysitisconsideringusingthenewtechnologytochargedriverseachtimetheycrossthezoneboundaryuptoadailymaximuminsteadofpayingonceforanentireday’stravel.Thatwouldbecheaperfordriverswhomakefewtripsintothezonealthoughdriverswhospendalongtimetrundlingaroundwithoutleavingtherebycausingthemostcongestionwouldgetofflightlytoo. Furtherrefinementsmaybepossible.Thecurrentsystemhascuttrafficmostdrasticallyinthemiddleofthedaywhencongestionisatitslowest.Demandforroadspacewouldbettermatchsupplyifchargeswerevariable--highatthebusiesttimesofdayandlowinquietperiods. Suchatime-sensitivevariable-chargingschemeusingatag-and-beaconsystemwasendorsedlastyearbyBobKileytheTfL’sbosswhoalsosaidthathewantedtoextendthecongestionchargetootherpartsofLondon.ThatwouldbecontroversialandMr.Kiley’sunderlingswerequicktoinsistthathismusingswerenotofficialpolicy.ButtheoriginalschemewascontroversialtooyetKenLivingstoneLondon’smayoranditsbiggestbackerwasre-electedafterintroducingit.Itwouldbeashameiftimiditytookholdnow. Thenewdetectiontechnologyhasanidentificationrateof
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.14
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.8
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.6
急则治标与缓则治本有何不同
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.12
CouldHIVthevirusthatcausesAIDSbeweakeningTheresultsofastudyconductedinBelgiumattheInstituteofTropicalMedicineinAntwerpseemtosuggestthatinonecorneroftheworlditmightbe.ThereportpublishedinthelatestissueofAIDSaspecialistjournalconcludesthatHIV’sabilitytoreplicateknowntechnicallyasitsvirulencemayhavedecreasedsincethestartofthepandemic.KevinAdentheleadauthorofthepaperstressesthatthestudyisbasedonasmallsetofsamplesanddoesnotprovethatHIV’svirulenceisattenuatingaroundtheworld.Howeveritdoesoffernewinsightsintotheevolutionofthedisease. Dr.Arienlookedat24bloodsamplescollectedfromuntreatedpatientsattendinganHIV/AIDSclinicinAntwerp.Adozenofthesesamplesweretakenbetween1986and1989;theother12werecollectedbetween2002and2003.Firstheanalyzedthesamplestofindtheirviralloadthenumberofvirusparticlespercubiccentimeterandthesubtypeofvirusinvolved.InEuropeandNorthAmericathepredominantsubtypeisB;insub-SaharanAfricawheretheepidemicisatitsworstthepredominantsubtypeisC.MostofDr.Arien’ssampleswereofsubtypeB.Havingdonethisanalysishepairedthesamplesoffforaseriesofreplicative"duels".Eachsamplefromtheearlierserieswasmatchedwiththemostsimilaronefromthelaterseriesandtheywereplacedinidenticalcellculturestoseewhichwouldmultiplythemost.Theresultwasthat75%ofthevirusesfrom2002-03werelessvirulentthanapparentlysimilarcounterpartsfrom1986-89--astatisticallysignificantobservation. Dr.Arien’scautionissensibleatleastuntilsomeonereplicatestheworkelsewhere.Buthisconclusionisnotnecessarilysurprising.Suchviralattenuationasitisknownisonewaythatvaccinesareproduced. Whatcausesattenuationinwildvirusesthoughisamatterofspeculation.DrArienbelievesthatinthiscasetheattenuationcouldbetheresultofwhathecalls"serialgeneticbottlenecks"duringtransmissionfromhosttohost.Theseacttoreducethegeneticdiversityandthusthereplicativefitnessofthevirus.GeneticdiversityisknowntobeanimportantcomponentofHIV’svirulence.Butwhatmightcausethebottlenecksisstillunclear. AsecondreasonforcautionbesidesthesmallsizeofthestudyisasGeoffreyGarnettaprofessorofmicroparasiteepidemiologyatImperialCollegeLondonpointsoutthattheabilityofavirustoinfectcellsinatest-tubeisnotthesameasitsabilitytocausediseaseanddeathinahumanhost.NeverthelessDrAden’sresultisintriguingandsurelyworthfollowingupinalargerpieceofresearch. Wecanlearnfrompara.2that
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.16
Readingtooneselfisamodernactivitywhichwasalmostunknowntothescholarsoftheclassical.In1worldduringthefifteenthcenturytheterm"reading"2meantreadingaloud.Onlyduringthenineteenthcenturydidsilentreadingbecomecommonplace.Oneshouldbewaryhoweverof3thatsilentreadingcameaboutsimplybecausereadingaloudisan4toothers.Examinationoffactorsrelatedtothe5developmentofsilentreadingrevealsthatitbecametheusualmodeofreadingformostadultreadingtasksmainlybecausethetasksthemselveschangedin6. Thelastcenturysawasteadygradualincreasein7andthusinthenumberofreaders.Asreadersincreasedthenumberofpotentiallisteners8andthustherewassome9intheneedtoreadaloud.Asreadingforthebenefitoflistenersgrewlesscommonsocametheflourishingofreadingasa10activityinsuchpublicplacesaslibrariesrailwaycarriagesandofficeswherereadingaloudwould11distractiontootherreaders. Towardstheendofthecenturytherewasstill12argumentoverwhetherbooksshouldbeusedforinformationortreated13andoverwhetherthereadingofmaterialsuchasnewspaperswasinsomeway14weakening.Indeedthisargumentstillremainswithusineducation.15itsvirtuestheoldsharedliteracyculturehadgoneandwas16bytheprintedmassmediaontheonehandandbybooksandperiodicalsfora17readershipontheother. Bytheendofthecenturystudentswerebeingrecommendedtoadoptattitudestobooksandtouseskillsinreadingthemwhichwereinappropriate18notimpossiblefortheoralreader.Thesocialculturalandtechnologicalchangesinthecenturyhadgreatly19whattheterm"reading"20. Readthefollowingtext.ChoosethebestwordsforeachnumberedblankandmarkABCorDonANSWERSHEET1.4
热门题库
更多
国家统考科目
香港法概论
反间谍法
__学
合同法
证据学
民事诉讼法学
民法学
刑法学
消费者权益保护法
法理学
竞争法
国际公法
国际经济法
农村政策法规
行政法与行政诉讼法
湘公网安备 43130202000226号