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? ?阅读下面这篇短文，短文后有2项测试任务：(1)1～4题要求从所给的6个选项中为第 2～5段每段选择1个正确的小标题；(2)第5—8题要求从所给的6个选项中选择4个正确的选项，分别完成每个句子...
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? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为规定段每段选择1
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为规定段每段选择1
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? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为规定段每段选择1
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为规定段每段选择1
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为规定段每段选择1
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? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第2～5段每段选
? ?阅读下面这篇短文短文后有2项测试任务1第23～26题要求从所给的6个选项中为第1～4段每段选
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Language Whenmostofusthinkaboutlanguagewethinkfirstaboutwords.Thusthehardestpartoflearningaforeignlanguagemayseemtobememorizing【51】vocabulary;whenweobserveachildfirstacquiringspeechwetalkofhisprogress【52】amatteroflearningnewwords.Wearealso【53】tofeelthattheadultspeakerwiththelargestvocabularyhasthebest【54】ofEnglish.Tothink【55】alanguageasjustastockofwordsis【56】quitewrong.Wordsalonedonot【57】alanguage;agrammaris【58】tocombinetheminsomeintelligibleway.Moreoverwordsarerelativelyeasytolearnandindeedallofusgo【59】learningthemallour【60】.Theyarealsothe【61】stablepartoflanguage.Wordscomeinto【62】changetheirpronunciationsandmeaningsanddisappearcompletelyallwithcomparativeease.Yetitistruethatthe【63】isfocusoflanguage.Itisinwords【64】soundsandmeaningsinterlocktoallowusto【65】withoneanotheranditiswordsthatwearrangetogethertomakesentencesconversationsanddiscourseofallkinds.Thuswehaveaparadoxinthatthemostshort-livedpartoflanguageisalsothecentrewheremeaningpronunciationandgrammarcometogether.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
TheAttitudeForComputers AsDr.SamuelJohnsonsaidinadifferenteraaboutladiespreachingthesurprisingthingaboutcomputersisnotthattheythinklesswellthanamanbutthattheythinkatall.Theearlyelectroniccomputerdidnothavemuchgoingforitexceptamarvelousmemoryandsomegoodmathskills.Buttodaythebestmodelscanbewireduptolearnbyexperiencefollowanargumentaskproperquestionsandwritepoetryandmusic.Theycanalsocarryonsomewhatpuzzlingconversations. Computersimitatelife.Ascomputersgetmorecompletetheimitationgetsbetter.Finallythelinebetweentheoriginalandthecopybecomesunclear.Inanother15yearsorsowewillseethecomputerasanewformoflife. Theopinionseemsridiculousbecauseforonethingcomputerslackthedrivesandemotionsoflivingcreatures.Butdrivescanbeprogrammedintothecomputer’’sbrainjustasnatureprogrammedthemintoourhumanbrainsasapartoftheequipmentforsurvival. Computersmatchpeopleinsomerolesandwhenfastdecisionsareneededinacrisistheyoftensurpassthem.Havingevolvedwhenthepaceoflifewasslowerthehumanbrainhasaninherentdefectthatpreventsitfromabsorbingseveralstreamsofinformationsimultaneouslyandactingonthemquickly.Throwtoomanythingsatthebrainatonetimeanditfreezesup. Wearestillincontrolbutthecapabilitiesofcomputersareincreasingatafantasticratewhilerawhumanintelligenceischangingslowlyifatall.Computerpowerhasincreasedtentimeseveryeightyearssince1946.Inthe1990swhenthesixthgenerationappearsthereasoningpowerofanintelligencebuiltoutofsiliconwillbegintomatchthatofthehumanbrain. Thatdoesnotmeantheevolutionofintelligencehasendedontheearth.Judgingbythepastwecanexpectthatanewspecieswillariseoutofmansurpassinghisachievementsashehassurpassedthoseofhispredecessor.Onlyacarbonchemistryenthusiastwouldassumethatthespeciesmustbeman’’sflesh-and-blooddescendants.Thenewkindofintelligentlifeismorelikelytobemadeofsilicon. Intermsofmakingdecisionsthehumanbraincannotbecomparedwiththecomputerbecauseinthelongproceduresofevolutiontheslowpaceoflifedidn’trequiresuchanabilityofthehumanbrain.
{{*HTML*}}阅读下面的短文文章中有5处空白文章后面有6组文字请根据文章的内容选择5组文字将其分别放回文章原有位置以恢复文章原貌 {{B}}?????????? ???AnimalIntelligence{{/B}}??AreAnimals intelligent?Iftheyarewhichanimalsarethemostintelligent?Thesearenot easyquestionstoanswer.Inthefirstplacenooneisquitesurewhat intelligenceis.??Weoftensaythatintelligencemeansbeingable tosolveproblems.{{U}}?46?{{/U}}.Forexampledogsandcatsoften findtheirwayhomefromlongdistances.Todothistheyhavetousetheir intelligence.Theyhavetorememberandthink.Butmanybirdsfindtheirway overlongdistancestoo.Theytravelthousandsofmileseveryyearwhenthey movefromcooltowarmerplaces.Wedonotknowhowtheydothisbutweknow thattheydonotusetheirintelligence.{{U}}?47?{{/U}}.Youngbirds areabletomakethesejourneyswithouthelpassoonastheycanfly.Theyare bornwiththisability.Thisisnotintelligence.Wecallthis ’instinct’.??Oftenwecannotbesurewhetherananimalisacting intelligentlyorinstinctively.Whenadoghearsastrangenoiseitbarks.This isinstinct.Itcannotstopitselffromdoingthis.Itdoesnotreallyknowwhy itisdoingthis.Butsupposingahouseisonfireandthedogbarksoutsideits master’sbedroomuntilhewakesupisthedogusingitsintelligence?{{U}} ?48?{{/U}}.Oftenwecannotbesure.??Manyanimals howevercanbetaughttosoleproblemsespeciallywhentheyaregivenrewards. Ratshavebeentaughttopressalevertogetfood.Pigeonshavebeentaughtto peckadiscforthesamereason.Evenanoctopus章鱼hasbeentrainedtoknow thedifferencebetween?asquareandanoblong长方形!Animalsincircuses havebeentaughttodoallsortsoftrickstoamuseanaudience.{{U}}?49 ?{{/U}}.ItissayingifIdothisIwillgetareward.ThereforeIwill doit.Thismaybethoughtofasalowkindofintelligence.? ?Someanimalshowevershowamuchhigherkindofintelligence.Theysolve problemswithoutanyhelp.Chimpanzeesoneoftheapefamilyaremuchmore intelligentthanotheranimals.Achimpanzeeoncedidsomethingevenmore intelligent.Hedidnothaveastick.Hehadtwoshorttubes.Neitherofthe tubeswaslongenoughtoreachthebananabutonewaswiderthantheother.He jammedthenarrowtubeinsidethewidertubeandinthiswaymadeonetubelong enoughtoreachthebanana{{U}}?50?{{/U}}.??A．Isit solvingtheproblembywakingitsmasterorisitsimplybarkinginstinctively becauseitisafraid???B．Chimpanzeescansolvecertainproblems withoutanyhelp.??C．Someanimalsseemabletodothis.? ?D．Inallthesecaseswemaysaythatananimalisusing intelligence.??E．Inotherwordshedidnotsimplyuseatool whichitselfisintelligent:hemadeatool.??F．Theydonot rememberplacesanddirectionsandthenmakedecisions.
TheAttitudeForComputers AsDr.SamuelJohnsonsaidinadifferenteraaboutladiespreachingthesurprisingthingaboutcomputersisnotthattheythinklesswellthanamanbutthattheythinkatall.Theearlyelectroniccomputerdidnothavemuchgoingforitexceptamarvelousmemoryandsomegoodmathskills.Buttodaythebestmodelscanbewireduptolearnbyexperiencefollowanargumentaskproperquestionsandwritepoetryandmusic.Theycanalsocarryonsomewhatpuzzlingconversations. Computersimitatelife.Ascomputersgetmorecompletetheimitationgetsbetter.Finallythelinebetweentheoriginalandthecopybecomesunclear.Inanother15yearsorsowewillseethecomputerasanewformoflife. Theopinionseemsridiculousbecauseforonethingcomputerslackthedrivesandemotionsoflivingcreatures.Butdrivescanbeprogrammedintothecomputer’’sbrainjustasnatureprogrammedthemintoourhumanbrainsasapartoftheequipmentforsurvival. Computersmatchpeopleinsomerolesandwhenfastdecisionsareneededinacrisistheyoftensurpassthem.Havingevolvedwhenthepaceoflifewasslowerthehumanbrainhasaninherentdefectthatpreventsitfromabsorbingseveralstreamsofinformationsimultaneouslyandactingonthemquickly.Throwtoomanythingsatthebrainatonetimeanditfreezesup. Wearestillincontrolbutthecapabilitiesofcomputersareincreasingatafantasticratewhilerawhumanintelligenceischangingslowlyifatall.Computerpowerhasincreasedtentimeseveryeightyearssince1946.Inthe1990swhenthesixthgenerationappearsthereasoningpowerofanintelligencebuiltoutofsiliconwillbegintomatchthatofthehumanbrain. Thatdoesnotmeantheevolutionofintelligencehasendedontheearth.Judgingbythepastwecanexpectthatanewspecieswillariseoutofmansurpassinghisachievementsashehassurpassedthoseofhispredecessor.Onlyacarbonchemistryenthusiastwouldassumethatthespeciesmustbeman’’sflesh-and-blooddescendants.Thenewkindofintelligentlifeismorelikelytobemadeofsilicon. Dr.SamuelJohsondisapprovedofladiestopreach.
OnAntibodies Substancesforeigntothebodysuchasdisease-causingbacteriaandvirusesandotherinfectiousagentsarerecognizedbythebodysimmunesystemasinvaders.Ournaturaldefensesagainsttheseinfectiousagentsareantibodiesproteinsthatseekouttheantigens抗原andhelpdestroythem. Antibodieshavetwoveryusefulcharacteristics.Firsttheyareextremelyspecific;thatiseachantibodybindstoandattacksoneparticularantigen.Secondsomeantibodiesonceactivatedbytheoccurrenceofadiseasecontinuetoconferresistanceagainstthatdisease.Classicexamplearetheantibodiestothechildhooddiseasesofchickenpox水痘andmeasles. Thesecondcharacteristicofantibodiesmakesitpossibletodevelopvaccines.Avaccine痘苗isapreparationofkilledorweakenedbacteriaorvirusesthatwhenintroducedintothebodystimulatestheproductionofantibodiesagainsttheantigensitcontains. Itisthefirsttraitofantibodiestheirspecificitythatmakesmonoclonalantibodytechnologysovaluable.Notonlycanantibodiesbeusedtherapeutically在治疗上toprotectagainstdisease;theycanalsohelpto.diagnoseawidevarietyofillnessesandcandetectthepresenceofdrugsviralandbacterialproductsandotherunusualorabnormalsubstancesintheblood. Givensuchadiversityofusesforthesediseased-fightingsubstancestheirproductioninpurequantitieshaslongbeenthefocusofscientificinvestigation.Theconventionalmethodwastoinjectalaboratoryanimalwithanantigenandthenafterantibodieshadbeenformedcollectthoseantibodiesfromthebloodserum血清Antibodycontainingbloodserumiscalledantiserum抗血清.Therearetwoproblemswiththismethod:Ityieldsantiserumthatcontainsundesiredsubstancesanditprovidesaverysmallamountofusableantibody. Monoclonalantibodytechnologyallowsustoproducelargeamountsofpureantibodies.inthefollowingway:wecanobtaincellsthatproduceantibodiesnaturally;wealsohaveavailableaclassofcellsthatcangrowcontinuallyincellculture培养.Ifweformahybrid混血儿thatcombinesthecharacteristicofimmortality永生withtheabilitytoproducethedesiredsubstancewewouldhaveineffectafactorytoproduceantibodiesthatworkaroundtheclock. Inmonoclonalantibodytechnologytumorcellsthatcanreplicate重复endlesslyarefusedwithmammaliancellsthatproduceanantibody.Theresultofthiscellfusionisahybridoma杂交瘤whichwillcontinuallyproduceantibodies.Theseantibodiesarecalledmonoclonalbecausetheycomefromonlyonetypeofcellthehybridomacell;antibodiesproducedbyconventionalmethodsontheotherhandarederivedfrompreparationscontainingmanykindsofcellsandhencearecalledpolyclonal.Anexampleofhowmonoclonalantibodiesarederivedisdescribedbelow. Amyelomaisatumorofthebonemarrow骨髓thatcanbeadaptedtogrowpermanendyincellculture.Whenmyelomacellswerefusedwithantibody-producingmammalianspleencellsitwasfoundthattheresultinghybridcellsorhybridomasproducedlargeamountsofmonoclonal骨髓瘤antibody.Thisproductofcellfusioncombinedthedesiredqualitiesofthetwodifferenttypesofcells:theabilitytogrowcontinuallyandtheabilitytoproducelargeamountsofpureantibody. Becauseselectedhybridcellsproduceonlyonespecificantibodytheyaremorepurethanthepolyclonalantibodiesproducedbyconventionaltechniques.Theyarepotentiallymoreeffectivethanconventionaldrugsinfightingdiseasesincedrugsattacknotonlytheforeignsubstancebutthebody’sowncellsaswellsometimesproducingundesirablesideeffectssuchasnausea恶心andallergicreactions.Monoclonalantibodiesattackthetargetmoleculeandonlythetargetmoleculewithnoorgreatlydiminishedsideeffects. Thepolyclonalantibodiesaredifferentfromthemonoclonalonesinallthefollowingwaysexceptthat______.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
Language Whenmostofusthinkaboutlanguagewethinkfirstaboutwords.Thusthehardestpartoflearningaforeignlanguagemayseemtobememorizing【51】vocabulary;whenweobserveachildfirstacquiringspeechwetalkofhisprogress【52】amatteroflearningnewwords.Wearealso【53】tofeelthattheadultspeakerwiththelargestvocabularyhasthebest【54】ofEnglish.Tothink【55】alanguageasjustastockofwordsis【56】quitewrong.Wordsalonedonot【57】alanguage;agrammaris【58】tocombinetheminsomeintelligibleway.Moreoverwordsarerelativelyeasytolearnandindeedallofusgo【59】learningthemallour【60】.Theyarealsothe【61】stablepartoflanguage.Wordscomeinto【62】changetheirpronunciationsandmeaningsanddisappearcompletelyallwithcomparativeease.Yetitistruethatthe【63】isfocusoflanguage.Itisinwords【64】soundsandmeaningsinterlocktoallowusto【65】withoneanotheranditiswordsthatwearrangetogethertomakesentencesconversationsanddiscourseofallkinds.Thuswehaveaparadoxinthatthemostshort-livedpartoflanguageisalsothecentrewheremeaningpronunciationandgrammarcometogether.
OldMothers’ChildrenHaveHigherDiabetes糖尿病Risk Childrenofoldermothersrunahigherriskofdevelopinginsulin-dependent胰岛素依赖型的diabetestheBritishMedicalJournalsaid.Astrongassociationwasfoundbetweenincreasingmaternal母亲的ageatdeliveryandriskofinsulin-dependentdiabetesinthechild.RiskwashighestinfirstbornchildrenanddecreasedprogressivelywithhigherbirthorderProfessorEdwinGaleandcolleaguesatSouthmeadHospitalinBristolsaid.Diabetesisaseriousincurablelifelongdiseasecharacterized以......作为特性byallinabilitytocontroltheamountofsugarintheblood.Insulin-dependentdiabeteswhichmainlyaffectschildrenistreatedbyadministeringthehormoneinsulin.Galelookedinto1375familiesintheOxfordareawhereoneormorechildrenhaddiabetesandfoundthattheriskofachilddevelopinginsulin-dependentdiabetesincreasedby25percentforeachfive-yearbandofthemothersage. Theriskofdevelopingdiabeteswasalsolinkedtotheageofthefather.Foreveryfive-yearbandofthefather’’sagetheriskofthechilddevelopingdiabetesincreasedbyninepercent.Theriskofdiabeteswashigh?estamongthefirstbornchildrenofmotherswhostartedtheirfamilieslateandtheriskdecreasedbyabout15percentforeachsubsequentchildtheBMJsaid.Theolderthemothertheearlierthestartofinsulin-dependentdiabetesinthechild.Otherstudieshavealreadyshownthatchildrenborntooldermothersovertheageof35haveanincreasedriskofdiabetesbutthisstudyisthefirsttoestablishthatriskincreasescontinuouslyinrelationtoincreasingmaternalageDr.PollyBingleyofSouthmeadHospitaltoldReuters路透社.Thenewstudyisthefirsttoshowthatriskisrelatedtobirthorder. Thestudyalsopartlyexplainsincreasingdiabetes.Between1970and1996theproportionofchildrenborntomothersagedbetween30and34increasedto28percentfrom15percentandthiscouldaccountforrisingnumbersofchildhooddiabetespatientsthescientistssaidinthealarmingincreaseintherateofinsulin-dependentdiabetesamongchildreninrecentyears.Thisstudymaywellprovideacluetotheunderstandingofthisproblem.ItismostlikelythatthereareanumberoffactorstoexplaintheincreaseDiabetesUKsaid.Therearesome1.4milliondiagnoseddiabetessufferersinBritainthecharityDiabetesUKsaid.Ofthese1.4millionsufferersthereare20000peopleunderage20whosufferfrominsulin-dependentdiabetes. Accordingtothepassagetheriskofachilddevelopinginsulin-dependentdiabetesislinkedtoallthefollowingfactorsEXCEPT______.
Vending Vendingissuchanup-to-dateconceptinprovidingproductswhereandwhencustomerswantthemthatitishardtobelievethatitmadeitsfirstappearanceinEgyptianTemplesbackin215B.C. Vendinghasbenefitedfromthatlonghistoryandisnowpoisedtomeettheneedsofthe21stcenturyconsumer. Currentdaypressuresmeanthatwearealltime-starvedandthereadyavailabilityofadrinkandasnackattherighttemperaturejustwherewewant.Itistheconvenientluxurythathelpstokeepstressatbayandprovidesafewmoreminutesatthedeskorinthegym. Atworkthoseextraminutesspentmakingteaorcoffeebyhandreallyaddup.ResearchconductedbytheNOPNationalOpinionPollfortheAssociationshowedthattheaveragetimespentonthisbyemployeesoverandaboveformallunchandteabreaksis45minutesperday.Thatequatestoafirmemploying50peoplelosingupto37maneverydayarealholeinproductivity! It’’snotjustintheworkplacethoughthatthebenefitsofvendingcanbeenjoyed.Moreandmoremajorhouseholdbrandsareseeingvendingasanidealroutetothecustomerfortheirproductsbecausethevendingmachinecanbetrustedtobereadytoservewheneverthereisademand.Machinesarenowfamiliarsightsatairportsgarageforecourtsleisuresitesrailwaystationsandanywhereelsethatpeoplegatherallowingconsumerstoputtogetheraninstantpicnic. It’’snosurprisethereforethatconsumersarecurrentlyspendingattherateofsome￡1billionperyearthroughtheslotsofvendingmachinesnowthat10milliondrinksarevendedintocupseveryday. Vendingmachinescannowbeseen______.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
OldMothers’ChildrenHaveHigherDiabetes糖尿病Risk Childrenofoldermothersrunahigherriskofdevelopinginsulin-dependent胰岛素依赖型的diabetestheBritishMedicalJournalsaid.Astrongassociationwasfoundbetweenincreasingmaternal母亲的ageatdeliveryandriskofinsulin-dependentdiabetesinthechild.RiskwashighestinfirstbornchildrenanddecreasedprogressivelywithhigherbirthorderProfessorEdwinGaleandcolleaguesatSouthmeadHospitalinBristolsaid.Diabetesisaseriousincurablelifelongdiseasecharacterized以......作为特性byallinabilitytocontroltheamountofsugarintheblood.Insulin-dependentdiabeteswhichmainlyaffectschildrenistreatedbyadministeringthehormoneinsulin.Galelookedinto1375familiesintheOxfordareawhereoneormorechildrenhaddiabetesandfoundthattheriskofachilddevelopinginsulin-dependentdiabetesincreasedby25percentforeachfive-yearbandofthemothersage. Theriskofdevelopingdiabeteswasalsolinkedtotheageofthefather.Foreveryfive-yearbandofthefather’’sagetheriskofthechilddevelopingdiabetesincreasedbyninepercent.Theriskofdiabeteswashigh?estamongthefirstbornchildrenofmotherswhostartedtheirfamilieslateandtheriskdecreasedbyabout15percentforeachsubsequentchildtheBMJsaid.Theolderthemothertheearlierthestartofinsulin-dependentdiabetesinthechild.Otherstudieshavealreadyshownthatchildrenborntooldermothersovertheageof35haveanincreasedriskofdiabetesbutthisstudyisthefirsttoestablishthatriskincreasescontinuouslyinrelationtoincreasingmaternalageDr.PollyBingleyofSouthmeadHospitaltoldReuters路透社.Thenewstudyisthefirsttoshowthatriskisrelatedtobirthorder. Thestudyalsopartlyexplainsincreasingdiabetes.Between1970and1996theproportionofchildrenborntomothersagedbetween30and34increasedto28percentfrom15percentandthiscouldaccountforrisingnumbersofchildhooddiabetespatientsthescientistssaidinthealarmingincreaseintherateofinsulin-dependentdiabetesamongchildreninrecentyears.Thisstudymaywellprovideacluetotheunderstandingofthisproblem.ItismostlikelythatthereareanumberoffactorstoexplaintheincreaseDiabetesUKsaid.Therearesome1.4milliondiagnoseddiabetessufferersinBritainthecharityDiabetesUKsaid.Ofthese1.4millionsufferersthereare20000peopleunderage20whosufferfrominsulin-dependentdiabetes. HowmanydiagnoseddiabetespatientsarethereinBritain?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
Ourpublictransportationisnotsufficientfortheneedofthepeopleinourmajorcities.
OnAntibodies Substancesforeigntothebodysuchasdisease-causingbacteriaandvirusesandotherinfectiousagentsarerecognizedbythebodysimmunesystemasinvaders.Ournaturaldefensesagainsttheseinfectiousagentsareantibodiesproteinsthatseekouttheantigens抗原andhelpdestroythem. Antibodieshavetwoveryusefulcharacteristics.Firsttheyareextremelyspecific;thatiseachantibodybindstoandattacksoneparticularantigen.Secondsomeantibodiesonceactivatedbytheoccurrenceofadiseasecontinuetoconferresistanceagainstthatdisease.Classicexamplearetheantibodiestothechildhooddiseasesofchickenpox水痘andmeasles. Thesecondcharacteristicofantibodiesmakesitpossibletodevelopvaccines.Avaccine痘苗isapreparationofkilledorweakenedbacteriaorvirusesthatwhenintroducedintothebodystimulatestheproductionofantibodiesagainsttheantigensitcontains. Itisthefirsttraitofantibodiestheirspecificitythatmakesmonoclonalantibodytechnologysovaluable.Notonlycanantibodiesbeusedtherapeutically在治疗上toprotectagainstdisease;theycanalsohelpto.diagnoseawidevarietyofillnessesandcandetectthepresenceofdrugsviralandbacterialproductsandotherunusualorabnormalsubstancesintheblood. Givensuchadiversityofusesforthesediseased-fightingsubstancestheirproductioninpurequantitieshaslongbeenthefocusofscientificinvestigation.Theconventionalmethodwastoinjectalaboratoryanimalwithanantigenandthenafterantibodieshadbeenformedcollectthoseantibodiesfromthebloodserum血清Antibodycontainingbloodserumiscalledantiserum抗血清.Therearetwoproblemswiththismethod:Ityieldsantiserumthatcontainsundesiredsubstancesanditprovidesaverysmallamountofusableantibody. Monoclonalantibodytechnologyallowsustoproducelargeamountsofpureantibodies.inthefollowingway:wecanobtaincellsthatproduceantibodiesnaturally;wealsohaveavailableaclassofcellsthatcangrowcontinuallyincellculture培养.Ifweformahybrid混血儿thatcombinesthecharacteristicofimmortality永生withtheabilitytoproducethedesiredsubstancewewouldhaveineffectafactorytoproduceantibodiesthatworkaroundtheclock. Inmonoclonalantibodytechnologytumorcellsthatcanreplicate重复endlesslyarefusedwithmammaliancellsthatproduceanantibody.Theresultofthiscellfusionisahybridoma杂交瘤whichwillcontinuallyproduceantibodies.Theseantibodiesarecalledmonoclonalbecausetheycomefromonlyonetypeofcellthehybridomacell;antibodiesproducedbyconventionalmethodsontheotherhandarederivedfrompreparationscontainingmanykindsofcellsandhencearecalledpolyclonal.Anexampleofhowmonoclonalantibodiesarederivedisdescribedbelow. Amyelomaisatumorofthebonemarrow骨髓thatcanbeadaptedtogrowpermanendyincellculture.Whenmyelomacellswerefusedwithantibody-producingmammalianspleencellsitwasfoundthattheresultinghybridcellsorhybridomasproducedlargeamountsofmonoclonal骨髓瘤antibody.Thisproductofcellfusioncombinedthedesiredqualitiesofthetwodifferenttypesofcells:theabilitytogrowcontinuallyandtheabilitytoproducelargeamountsofpureantibody. Becauseselectedhybridcellsproduceonlyonespecificantibodytheyaremorepurethanthepolyclonalantibodiesproducedbyconventionaltechniques.Theyarepotentiallymoreeffectivethanconventionaldrugsinfightingdiseasesincedrugsattacknotonlytheforeignsubstancebutthebody’sowncellsaswellsometimesproducingundesirablesideeffectssuchasnausea恶心andallergicreactions.Monoclonalantibodiesattackthetargetmoleculeandonlythetargetmoleculewithnoorgreatlydiminishedsideeffects. Allthefollowingstatementsaboutantibodiesaretrueexcept______.
Eatingtoomuchfatcanleadtoheartdiseaseandcausehighbloodpressure.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
Heissureofthecomingofinvestmentboomafteradoptingthenewinvestmentpolicies.
Colorchangesinchameleonsseemtobecausedbyenvironmentaltemperatureaswellasbyotherexternalstimuli.
Vending Vendingissuchanup-to-dateconceptinprovidingproductswhereandwhencustomerswantthemthatitishardtobelievethatitmadeitsfirstappearanceinEgyptianTemplesbackin215B.C. Vendinghasbenefitedfromthatlonghistoryandisnowpoisedtomeettheneedsofthe21stcenturyconsumer. Currentdaypressuresmeanthatwearealltime-starvedandthereadyavailabilityofadrinkandasnackattherighttemperaturejustwherewewant.Itistheconvenientluxurythathelpstokeepstressatbayandprovidesafewmoreminutesatthedeskorinthegym. Atworkthoseextraminutesspentmakingteaorcoffeebyhandreallyaddup.ResearchconductedbytheNOPNationalOpinionPollfortheAssociationshowedthattheaveragetimespentonthisbyemployeesoverandaboveformallunchandteabreaksis45minutesperday.Thatequatestoafirmemploying50peoplelosingupto37maneverydayarealholeinproductivity! It’’snotjustintheworkplacethoughthatthebenefitsofvendingcanbeenjoyed.Moreandmoremajorhouseholdbrandsareseeingvendingasanidealroutetothecustomerfortheirproductsbecausethevendingmachinecanbetrustedtobereadytoservewheneverthereisademand.Machinesarenowfamiliarsightsatairportsgarageforecourtsleisuresitesrailwaystationsandanywhereelsethatpeoplegatherallowingconsumerstoputtogetheraninstantpicnic. It’’snosurprisethereforethatconsumersarecurrentlyspendingattherateofsome￡1billionperyearthroughtheslotsofvendingmachinesnowthat10milliondrinksarevendedintocupseveryday. Oneoftheadvantagesofvendingisthat______.
Language Whenmostofusthinkaboutlanguagewethinkfirstaboutwords.Thusthehardestpartoflearningaforeignlanguagemayseemtobememorizing【51】vocabulary;whenweobserveachildfirstacquiringspeechwetalkofhisprogress【52】amatteroflearningnewwords.Wearealso【53】tofeelthattheadultspeakerwiththelargestvocabularyhasthebest【54】ofEnglish.Tothink【55】alanguageasjustastockofwordsis【56】quitewrong.Wordsalonedonot【57】alanguage;agrammaris【58】tocombinetheminsomeintelligibleway.Moreoverwordsarerelativelyeasytolearnandindeedallofusgo【59】learningthemallour【60】.Theyarealsothe【61】stablepartoflanguage.Wordscomeinto【62】changetheirpronunciationsandmeaningsanddisappearcompletelyallwithcomparativeease.Yetitistruethatthe【63】isfocusoflanguage.Itisinwords【64】soundsandmeaningsinterlocktoallowusto【65】withoneanotheranditiswordsthatwearrangetogethertomakesentencesconversationsanddiscourseofallkinds.Thuswehaveaparadoxinthatthemostshort-livedpartoflanguageisalsothecentrewheremeaningpronunciationandgrammarcometogether.
TheAttitudeForComputers AsDr.SamuelJohnsonsaidinadifferenteraaboutladiespreachingthesurprisingthingaboutcomputersisnotthattheythinklesswellthanamanbutthattheythinkatall.Theearlyelectroniccomputerdidnothavemuchgoingforitexceptamarvelousmemoryandsomegoodmathskills.Buttodaythebestmodelscanbewireduptolearnbyexperiencefollowanargumentaskproperquestionsandwritepoetryandmusic.Theycanalsocarryonsomewhatpuzzlingconversations. Computersimitatelife.Ascomputersgetmorecompletetheimitationgetsbetter.Finallythelinebetweentheoriginalandthecopybecomesunclear.Inanother15yearsorsowewillseethecomputerasanewformoflife. Theopinionseemsridiculousbecauseforonethingcomputerslackthedrivesandemotionsoflivingcreatures.Butdrivescanbeprogrammedintothecomputer’’sbrainjustasnatureprogrammedthemintoourhumanbrainsasapartoftheequipmentforsurvival. Computersmatchpeopleinsomerolesandwhenfastdecisionsareneededinacrisistheyoftensurpassthem.Havingevolvedwhenthepaceoflifewasslowerthehumanbrainhasaninherentdefectthatpreventsitfromabsorbingseveralstreamsofinformationsimultaneouslyandactingonthemquickly.Throwtoomanythingsatthebrainatonetimeanditfreezesup. Wearestillincontrolbutthecapabilitiesofcomputersareincreasingatafantasticratewhilerawhumanintelligenceischangingslowlyifatall.Computerpowerhasincreasedtentimeseveryeightyearssince1946.Inthe1990swhenthesixthgenerationappearsthereasoningpowerofanintelligencebuiltoutofsiliconwillbegintomatchthatofthehumanbrain. Thatdoesnotmeantheevolutionofintelligencehasendedontheearth.Judgingbythepastwecanexpectthatanewspecieswillariseoutofmansurpassinghisachievementsashehassurpassedthoseofhispredecessor.Onlyacarbonchemistryenthusiastwouldassumethatthespeciesmustbeman’’sflesh-and-blooddescendants.Thenewkindofintelligentlifeismorelikelytobemadeofsilicon. Somedayitwillbedifficulttotellacomputerfromaman.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
Ithinkthisisadeliberateinsult.
OldMothers’ChildrenHaveHigherDiabetes糖尿病Risk Childrenofoldermothersrunahigherriskofdevelopinginsulin-dependent胰岛素依赖型的diabetestheBritishMedicalJournalsaid.Astrongassociationwasfoundbetweenincreasingmaternal母亲的ageatdeliveryandriskofinsulin-dependentdiabetesinthechild.RiskwashighestinfirstbornchildrenanddecreasedprogressivelywithhigherbirthorderProfessorEdwinGaleandcolleaguesatSouthmeadHospitalinBristolsaid.Diabetesisaseriousincurablelifelongdiseasecharacterized以......作为特性byallinabilitytocontroltheamountofsugarintheblood.Insulin-dependentdiabeteswhichmainlyaffectschildrenistreatedbyadministeringthehormoneinsulin.Galelookedinto1375familiesintheOxfordareawhereoneormorechildrenhaddiabetesandfoundthattheriskofachilddevelopinginsulin-dependentdiabetesincreasedby25percentforeachfive-yearbandofthemothersage. Theriskofdevelopingdiabeteswasalsolinkedtotheageofthefather.Foreveryfive-yearbandofthefather’’sagetheriskofthechilddevelopingdiabetesincreasedbyninepercent.Theriskofdiabeteswashigh?estamongthefirstbornchildrenofmotherswhostartedtheirfamilieslateandtheriskdecreasedbyabout15percentforeachsubsequentchildtheBMJsaid.Theolderthemothertheearlierthestartofinsulin-dependentdiabetesinthechild.Otherstudieshavealreadyshownthatchildrenborntooldermothersovertheageof35haveanincreasedriskofdiabetesbutthisstudyisthefirsttoestablishthatriskincreasescontinuouslyinrelationtoincreasingmaternalageDr.PollyBingleyofSouthmeadHospitaltoldReuters路透社.Thenewstudyisthefirsttoshowthatriskisrelatedtobirthorder. Thestudyalsopartlyexplainsincreasingdiabetes.Between1970and1996theproportionofchildrenborntomothersagedbetween30and34increasedto28percentfrom15percentandthiscouldaccountforrisingnumbersofchildhooddiabetespatientsthescientistssaidinthealarmingincreaseintherateofinsulin-dependentdiabetesamongchildreninrecentyears.Thisstudymaywellprovideacluetotheunderstandingofthisproblem.ItismostlikelythatthereareanumberoffactorstoexplaintheincreaseDiabetesUKsaid.Therearesome1.4milliondiagnoseddiabetessufferersinBritainthecharityDiabetesUKsaid.Ofthese1.4millionsufferersthereare20000peopleunderage20whosufferfrominsulin-dependentdiabetes. Whatisthecorrelationbetweenthemother’sageandthetimewhenthechilddevelopsinsulin-dependentdiabetes?
TheAttitudeForComputers AsDr.SamuelJohnsonsaidinadifferenteraaboutladiespreachingthesurprisingthingaboutcomputersisnotthattheythinklesswellthanamanbutthattheythinkatall.Theearlyelectroniccomputerdidnothavemuchgoingforitexceptamarvelousmemoryandsomegoodmathskills.Buttodaythebestmodelscanbewireduptolearnbyexperiencefollowanargumentaskproperquestionsandwritepoetryandmusic.Theycanalsocarryonsomewhatpuzzlingconversations. Computersimitatelife.Ascomputersgetmorecompletetheimitationgetsbetter.Finallythelinebetweentheoriginalandthecopybecomesunclear.Inanother15yearsorsowewillseethecomputerasanewformoflife. Theopinionseemsridiculousbecauseforonethingcomputerslackthedrivesandemotionsoflivingcreatures.Butdrivescanbeprogrammedintothecomputer’’sbrainjustasnatureprogrammedthemintoourhumanbrainsasapartoftheequipmentforsurvival. Computersmatchpeopleinsomerolesandwhenfastdecisionsareneededinacrisistheyoftensurpassthem.Havingevolvedwhenthepaceoflifewasslowerthehumanbrainhasaninherentdefectthatpreventsitfromabsorbingseveralstreamsofinformationsimultaneouslyandactingonthemquickly.Throwtoomanythingsatthebrainatonetimeanditfreezesup. Wearestillincontrolbutthecapabilitiesofcomputersareincreasingatafantasticratewhilerawhumanintelligenceischangingslowlyifatall.Computerpowerhasincreasedtentimeseveryeightyearssince1946.Inthe1990swhenthesixthgenerationappearsthereasoningpowerofanintelligencebuiltoutofsiliconwillbegintomatchthatofthehumanbrain. Thatdoesnotmeantheevolutionofintelligencehasendedontheearth.Judgingbythepastwecanexpectthatanewspecieswillariseoutofmansurpassinghisachievementsashehassurpassedthoseofhispredecessor.Onlyacarbonchemistryenthusiastwouldassumethatthespeciesmustbeman’’sflesh-and-blooddescendants.Thenewkindofintelligentlifeismorelikelytobemadeofsilicon. Futuremanwillbemadeofsiliconinsteadoffleshandblood.
Manyeconomistshavegivenintothefatallureofmathematics.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出了4个选项请根据短文的内容从4个选项中选择1个最佳答案 {{B}}??????? ????????EconomicReformin China{{/B}}??MoreUSsinologistshaveexpressedconfidencein China’seconomicreformandtheprospectsforChina’smodernization.? ?IfthereformsareimplementedsaidDoakBarnettprofessorofJohns HopkinsUniversitytheywould{{U}}?51?{{/U}}thetrendtowardsmore significantandthebroadereconomictiesbetweenChinaandtheUnitedStates whichwillhaveinsomerespectsafavorableimpact{{U}}?52 ?{{/U}}politicalrelations.??Alsothese{{U}}?53 ?{{/U}}willreinforcetrendforChinatobecomemoresteadilyinvolvedinthe internationaleconomicsandtheinternationalcommunity.Barnettbelieves the{{U}}?54?{{/U}}isdesirablefromChina’spointof{{U}}?55 ?{{/U}}andfortheinternationalcommunitythemoreactiveChinaisinthe internationalcommunitythelargerroleitmay{{U}}?56?{{/U}}inworld affairs.Hesaid.??Inthedirectionofchangingtheeconomic systemChinahasmade{{U}}?57?{{/U}}progress.? ?PersonallyIthinkChinahasacapacityformoving{{U}}?58 ?{{/U}}inthisdirectionandI’mfairlyconfidentthattheChinese leadershipwill{{U}}?59?{{/U}}tomoveinthisdirection.? ?AlfredD.WilhelmprojectdirectorofChinaPolicy{{U}}?60 ?{{/U}}theNextDecadeandseniorfellowattheAtlanticCouncil{{U}} ?61?{{/U}}theeconomicchangeswillenableChinaandUStodealwith eachotheronamoreequalbasis.??ChineseandAmericansnow haveopportunityto{{U}}?62?{{/U}}fullyinChina’seconomic development?andreciprocally相互Chinesewillbeableto{{U}}?63 ?{{/U}}technicalandfinancialsupportfromtheAmericanbusinesscommunity. ??Wilhelmsaid{{U}}?64?{{/U}}Chinahasestablished lawsandlegislations法规tohelpitsopen-policyAmericanbusinessnowhas theconfidencetodealwiththesystemastheyknowtheir{{U}}?65 ?{{/U}}willbeprotected.
Starfishclingtostonesbythesuctionoftheirinnumerabletubefeet.
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