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? ?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}}? ? ? ? ? ? ? ? ? ? ? ?...
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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
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{{*HTML*}}??阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子做出判断 ??????? ????????{{B}}UsingHIVVirusto CureCancer{{/B}}??Scientistsareplanningtousehuman immunodeficiency免疫缺陷virusHIVoneofmankind’smostfearedvirusesasa carrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbe cured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebody’s immune免疫的defensesmakingitidealforcarryingreplacementgenesinto patients’bodiesaccordingtotheObserver.??Ateamatthe California-basedSalkInstituteoneoftheworld’sleadingresearchcenterson biologicalscienceshascreatedaspecialnewbreedofHIVandhasstarted negotiationswiththeU.S.FoodandDrugAdministrationFDAtobeginclinical genetherapy治疗trialsthisyear.Thefirsttrialsareexpectedtoinvolve patientssufferingfromcancersthatcannotbecuredbysurgeryalthoughproject leaderProfessorInderVermasaidtheHIVtechniquewouldhavefarwider applications.??Theplanremainsverylikelytocausecontroversy sinceitinvolvesmakinguseofaviruswhichhascausedmorethan22million deathsaroundtheworldinthepasttwodecades.Vermasaidthattheideaof usingHIVforabeneficialpurposewasshockingbutthefiercenatureofHIV haddisappearedbyhavingallsixofthepotentiallydeadlygenes removed.??Illnessessuchasvariouscancersarecausedwhena geneinapatient’sbodyfailstoworkproperly.Inthepasttwoyears breakthroughsingenetics遗传学haveledgenetherapyscientiststotryand replacethegenesthatdonotfunctionnormally.??Unfortunately thebody’simmunedefenseshavebeenknowntoattackthemodifiedgenesandmake themlosetheireffectsbeforetheycanstarttheirtaskandprogressinthe fieldhasbeenheldupbythelackofasuitablecarrier.??The HIVvirushastheabilitytoescapefromandthendestroytheimmunedefense cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientists asawayofsecretlyconveyingreplacementgenesintopatients’ bodies.TheHIVvirushascausedmoredeathsindevelopedcountries.
{{*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}}ANewMedicinetoTreatBothAIDSandHepatitisB{{/B}}? ?AmedicineapprovedlastmonthtotreatAIDS艾滋病alsoshowspromise againsthepatitisB乙型肝炎.??Thedrug3TCputsdownthe hepatitisBvirusinpeoplewithchronicinfectionsstoppingitsdamagetothe liverresearchersreported.??AboutonemillionAmericansare thoughttobeinfectedwithhepatitisBwhichcanleadtocirrhosis肝硬化 liverfailureandlivercancerinasmallproportionofvictimsifleft untreated.{{U}}?46?{{/U}}??It’sapreliminarystudy butthisispromising.Itlookslikeithasthepotentialtomakeasignificant impactonhepatitisBsaidDrJulesL.DienstagofMassachusettsGeneral Hospitalwhodirectedthestudy.??Currentlytheonlytreatment forhepatitisBisinterferon干扰素.Suchatreatmentcanpermanentlyeliminate thevirusinaboutone-thirdofpatients.{{U}}?47?{{/U}}? ?Inthelateststudydoctorsfoundthat3TCappearedtoknockoutthe viruspermanentlyinabout20%ofpatientswhengivenforthreemonths.{{U}} ?48?{{/U}}??Unlikeinterferon3TCisgiveninpill formandcarriesfewsideeffects.ThedrugwasapprovedbytheFoodandDrug AdministrationinNovemberforuseagainstAIDS.??Boththe hepatitisBvirusandtheAIDSvirusneedaproteintoreproduce.{{U}}?49 ?{{/U}}DoctorshavetestedsimilarAIDSdrugsagainsthepatitisB.Butall except3TChaveturnedouttobeineffectiveortootoxic有毒的.? ?DrJayHoofnagleoftheNationalInstitutesofHealthsaidanextstep willbetocombine3TCwithinterferontoseeifthetwodrugstogetherimprove thechanceofcuringhepatitisB.Itlooksextremelypromisinghesaidof 3TC.{{U}}?50?{{/U}}A．3TCisoneofagroupofdrugsthatblock productionofthisprotein.B．Interferonmustbeinjectedforfourtosix monthsandoftenhasunpleasantsideeffectsincludingflu-likesymptoms fatigueanddepression.C．Thehospitalisamongthebiggestonesin America.D．Dienstagsaidhehopesthatwithlongertreatmentthisresponse ratecanbedoubled.E．It’snottheanswerbutit’sastepintheright direction.F．Perhaps20%ofthesepatientshavelingering迁延性的infections thatwouldbenefitfromtreatment.{{*HTML*}}
{{*HTML*}}{{B}}第三篇{{/B}} ??????? ???{{B}}IstheNewsBelievable?{{/B}}??Unlessyou havegonethroughtheexperienceyourselforwatchedalovedone’sstruggle youreallyhavenoideajusthowdesperatecancercanmakeyou.Youprayyou rageyoubargainwithGodbutmostofallyouclutchatanyhopenomatter howremoteofasecondchanceatlife.??Forafewexciteddays lastweekhoweveritseemedasifthewholeworldwasacancerpatientand thatallhumankindhadbeengrantedareprieve痛苦减轻.Triggeredbyafront-page medicalnewsstoryintheusuallyreservedNewYorkTimesallanybodywas talkingabout—ontheradioontelevisionontheInternetinphonecallsto friendsandrelatives—wasthereportthatacombinationoftwonewdrugs couldastheTimesputitcurecancerintwoyears.??Ina matterofhourspatientshadjammedtheirdoctors’phonelinesbeggingfora chancetotestthemiraclecancercure.Cancerscientistsracedtothephonesto makesureeveryoneknewabouttheirresearchtoogeneratinganewroundof headlines.??Thetimecertainlyseemedripeforabreakthroughin cancer.OnlylastmonthscientistsattheNationalCancerInstituteannounced thattheywerehaltingaclinicaltrialofadrugcalledtamoxifen他莫昔芬—and offeringittopatientsgettingtheplacebo安慰剂—becauseithadprovedso effectiveatpreventingbreastcanceralthoughitalsoseemedtoincreasethe riskofuterine子宫的cancer.TwoweekslatercametheNewYorkTimes’report thattwonewdrugscanshrinktumorsofeveryvarietywithoutanysideeffects whatsoever.??Itallseemedtoogoodtobetrueandofcourseit was.Therearenomiraclecancerdrugsatleastnotyet.Atthisstageallthe drugmanufacturercanofferissomeveryinterestingmoleculesandtheonly cancerstheyhavecuredsofarhavebeeninmice.BYthemiddleoflastweek eventheTVtalk-showhostswhotalkedmostaboutthenewshadlearnedwhat everyscientistalreadyknew:thatcuringadiseaseinlabanimalsisnotthe sameasdoingitinhumans.Thehistoryofcancerresearchhasbeenahistory ofcuringcancerinthemouseDr.RichardKlausnerheadoftheNational CancerInstitutetoldtheLosAngelesTimes.Wehavecuredmiceofcancerfor decades—anditsimplydidn’tworkinpeople.Theunprecedentedinterestinthecureofcancerwasarousedby
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ?{{B}}StressatWorkandStillHealthy{{/B}}??Thetermcouldyet becomethewordoftheyear:stressisoneveryone’slipsthesedaysand everywhere.Notonlymanagersofficialsandteachersarecomplainingnowadays housewiveschildrenandpensionersnowalsohavetheirownproblems.Theytoo sacrificethemselvesforothersfeelunder-oroverworkedandquicklylose theirinnerbalance.Irritationtirednessandexhaustionquicklyfollow.But thatisonlythenegativeaspect.Stressafterallisalsolinkedtopositive termssuchasjoyoflifetensionandvitality活力.??Firstly stressishealthysaysWolfgangStehlingfromEItvelle.Thedoctorand managementconsultantsays:Itoccurswhenthebodylosesitsinnerbalance butthenstresshormonesareproducedtore-establishthebalance.Thusstress isnothingmorethanapositivereactionofthebodytopressure.Itis unavoidableaspartofournature:Thereisnosuchthingasastress-free life.??Butwhetherstressleadstotensionsinthemindorto tensenessofthemusclesdependsontheduration持续时间itscauseorcausesand thesufferer’spersonalsituation.Peoplewhohavetroublesleepingorsuffer frombadmoodsorsimplythefluwillnotbeontopoftheworldandwilltake everylittlestrifeasnegativestress.Otherspeoplewhofeelrefreshedat everynewturnarerelaxedandsuccessfulwillviewadifficultroundof negotiationsorcompetitionatworkmoreasapositivechallengethanacrossto bear.??Exercisehealthyeatingandrelaxationarethusthethree pillarsbywhichstresscanbeconqueredalmosteverytime.Thesefactorsforma unitexplainsMaritaVoelker-Albertspokeswomanforthegovernment’sNutrition AdviceCenterinCologne.ItscampaignGutDraufFeelingGoodistargetedat youngpeople.Thegovernmentagency’sresearchsuggeststhatthreeoutoffour adolescentsfeeltiredovertaxed负担过重andunderstress.Eatingdisordersand complaintssuchasmigraines偏头痛andindigestion消化不良nervousnessand concentrationproblemshaveincreasedamong12-to16-year-olds.? ?Buteventhebestsolutionsdon’tworkiftheyarenotputintopractice saysStehling.Anybodywhogoesjoggingregularlypracticesyoga瑜伽功and prescribesgoodliteratureasacurefornegativestressmaywellendupunder morepressureashetriestofindthetimeforitall.Sometimessaysthe consultantithelpstotaketimeouttoreducestresslevelsovera weekend.WhichofthefollowingisNOTacorrectviewonstress?
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{{*HTML*}}? ?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3～6段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ?????{{B}}ExercisingYourMemory{{/B}}1 ?Agingdoesnotmeanadramaticdeclineinmemorypowerunlessyouhelpit happenbylettingyourmindgo.2?That’snottosaythatmemorydoesn’t changethroughoutlife.Researchersdividememoryintocategoriesbasedonthe lengthoftimewhenmemoriesarestored.Onesystemdividesitupasshort-term lessthanoneminute;rememberingatelephonenumberwhileyoudialfor instancelong-termoveraperiodofyearsandverylong-termmemoryovera lifetime.3?Short-termmemoryisn’tmastereduntilaboutage7but afterthatyouneverloseit.Long-termmemoryhoweverinvolvesmoreeffort andskillandchangesmorethroughlife.It’snotuntiltheearlyteens十几岁 thatmostpeopledevelopamaturelong-termmemory.4?Firstwemust getinformationintoourheadsthroughlearning.Learningstrategiescanget rusty生锈withoutconstantuse.Highschoolandcollegestudentswhoare forcedtorepeatedlyexercisetheirlongtermmemoryabilitiesatleast long-termenoughtogetthemthroughafinalexamusuallydowellonmemory tests.Thelongeryoustayinschoolthemorechanceyougettopolishyour learningskills.It’snowonderthatmorehighlyeducatedpeoplehavemore effectivememoryskillsthroughoutlife.5?Althougholderpeoplein generallearnsomewhatmoreslowlythantheydidwhenyoungeradramatic differenceexistsbetweenthosewhostayintellectuallyactivemreading discussingtakingclassesthinking—andthosewhodonot.Givingthebraina dailyworkout锻炼isjustasimportantasexercisingyourmuscles.Brainwork keepsyourlearningstrategiesinshapeandthishelpsyourmemorytofunction atfullcapacity.6?Thenextpartofahealthylong-termmemoryis retention记忆力theabilitytostorewhatyouhavelearned.Memoryresearchers stilldonotknowwhethermemoriesarelost—whethertheystillexistinthe brainbutourmentalsearchingcannotturnthemuporhavedisappearedentirely asourbrainages.7?Thethirdnecessityformemoryisrecallthe abilitytobringtomindthememorieswehavestored.Againwhileaginghas widelydifferenteffectsontherecallabilitiesofdifferentpeopleresearch indicatesthattheolderwegetthelongerittakestorecallfacts.Butslower recallisstillrecall.Infactagingdoesnotseemtohaveanyeffecton forgettingatallwhichtakesplaceatthesamerateinyoungerandolder people.Paragraph4______
{{*HTML*}}? ?下面有3篇短文每篇短文后有5道题每道题后面有4个选项请根据文章的内容从每题所给的4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ?????????? {{B}}FirstAid{{/B}}??Firstaidisemergencycareforavictimof suddenillnessorinjuryuntilmoreskillfulmedicaltreatmentisavailable.It maysavealifeorimprovecertainvitalsignsincludingpulsetemperaturea clearairway气道andbreathing.Inminoremergenciesfirstaidmaypreventa victim’sconditionfromturningworseandproviderelieffrompain.Firstaid mustbeadministeredasquicklyaspossible.Inthecaseofthecritically injuredafewminutescanmakethedifferencebetweencompleterecoveryand lossoflife.??First-aidmeasuresdependuponavictim’sneeds andtheprovider’slevelofknowledgeandskill.Knowingwhatnottodoinan emergencyisasimportantasknowingwhattodo.Improperlymovingapersonwith aneckinjuryforexamplecanleadtopermanentspinal脊柱的injuryand paralysis瘫痪.??Despitethevarietyofinjuriespossible severalprinciplesoffirstaidapplytoallemergencies.Thefirststepisto cal*lforprofessionalmedicalhelp.Thevictimifconsciousshouldbe reassuredthatmedicalaidhasbeenrequestedandaskedforpermissionto provideanyfirstaid.Nextassessthesceneaskingotherpeopleorthe injuredperson’sfamilyorfriendsaboutdetailsoftheinjuryorillnessany carethatmayhavealreadybeengivenandpreexistingconditionssuchas diabetes糖尿病orhearttrouble.Thevictimshouldbecheckedforamedical bracelet手镯orcardthatdescribesspecialmedicalconditions.Unlessthe accidentscenebecomesunsafeorthevictimmaysufferfurtherinjurydonot movethevictim.??Firstaidrequiresrapidassessmentofvictims todeterminewhetherlife-threateningconditionsexist.Onemethodfor evaluatingavictim’sconditionisknownbytheacronym首字母缩写语ABCwhich standsfor:??A-Airway:isitopenandclear??? B-Breathing:isthepersonbreathing?Looklistenandfeelfor breathing.??C-Circulation:isthereapulse?Istheperson bleedingexternally?Checkskincolorandtemperatureforadditionalindications ofcirculationproblems.Youmayassessavictim’sconditionbyallthefollowingEXCEPT
{{*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}}ANewMedicinetoTreatBothAIDSandHepatitisB{{/B}}? ?AmedicineapprovedlastmonthtotreatAIDS艾滋病alsoshowspromise againsthepatitisB乙型肝炎.??Thedrug3TCputsdownthe hepatitisBvirusinpeoplewithchronicinfectionsstoppingitsdamagetothe liverresearchersreported.??AboutonemillionAmericansare thoughttobeinfectedwithhepatitisBwhichcanleadtocirrhosis肝硬化 liverfailureandlivercancerinasmallproportionofvictimsifleft untreated.{{U}}?46?{{/U}}??It’sapreliminarystudy butthisispromising.Itlookslikeithasthepotentialtomakeasignificant impactonhepatitisBsaidDrJulesL.DienstagofMassachusettsGeneral Hospitalwhodirectedthestudy.??Currentlytheonlytreatment forhepatitisBisinterferon干扰素.Suchatreatmentcanpermanentlyeliminate thevirusinaboutone-thirdofpatients.{{U}}?47?{{/U}}? ?Inthelateststudydoctorsfoundthat3TCappearedtoknockoutthe viruspermanentlyinabout20%ofpatientswhengivenforthreemonths.{{U}} ?48?{{/U}}??Unlikeinterferon3TCisgiveninpill formandcarriesfewsideeffects.ThedrugwasapprovedbytheFoodandDrug AdministrationinNovemberforuseagainstAIDS.??Boththe hepatitisBvirusandtheAIDSvirusneedaproteintoreproduce.{{U}}?49 ?{{/U}}DoctorshavetestedsimilarAIDSdrugsagainsthepatitisB.Butall except3TChaveturnedouttobeineffectiveortootoxic有毒的.? ?DrJayHoofnagleoftheNationalInstitutesofHealthsaidanextstep willbetocombine3TCwithinterferontoseeifthetwodrugstogetherimprove thechanceofcuringhepatitisB.Itlooksextremelypromisinghesaidof 3TC.{{U}}?50?{{/U}}A．3TCisoneofagroupofdrugsthatblock productionofthisprotein.B．Interferonmustbeinjectedforfourtosix monthsandoftenhasunpleasantsideeffectsincludingflu-likesymptoms fatigueanddepression.C．Thehospitalisamongthebiggestonesin America.D．Dienstagsaidhehopesthatwithlongertreatmentthisresponse ratecanbedoubled.E．It’snottheanswerbutit’sastepintheright direction.F．Perhaps20%ofthesepatientshavelingering迁延性的infections thatwouldbenefitfromtreatment.
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
{{*HTML*}}??阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子做出判断 ??????? ????????{{B}}UsingHIVVirusto CureCancer{{/B}}??Scientistsareplanningtousehuman immunodeficiency免疫缺陷virusHIVoneofmankind’smostfearedvirusesasa carrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbe cured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebody’s immune免疫的defensesmakingitidealforcarryingreplacementgenesinto patients’bodiesaccordingtotheObserver.??Ateamatthe California-basedSalkInstituteoneoftheworld’sleadingresearchcenterson biologicalscienceshascreatedaspecialnewbreedofHIVandhasstarted negotiationswiththeU.S.FoodandDrugAdministrationFDAtobeginclinical genetherapy治疗trialsthisyear.Thefirsttrialsareexpectedtoinvolve patientssufferingfromcancersthatcannotbecuredbysurgeryalthoughproject leaderProfessorInderVermasaidtheHIVtechniquewouldhavefarwider applications.??Theplanremainsverylikelytocausecontroversy sinceitinvolvesmakinguseofaviruswhichhascausedmorethan22million deathsaroundtheworldinthepasttwodecades.Vermasaidthattheideaof usingHIVforabeneficialpurposewasshockingbutthefiercenatureofHIV haddisappearedbyhavingallsixofthepotentiallydeadlygenes removed.??Illnessessuchasvariouscancersarecausedwhena geneinapatient’sbodyfailstoworkproperly.Inthepasttwoyears breakthroughsingenetics遗传学haveledgenetherapyscientiststotryand replacethegenesthatdonotfunctionnormally.??Unfortunately thebody’simmunedefenseshavebeenknowntoattackthemodifiedgenesandmake themlosetheireffectsbeforetheycanstarttheirtaskandprogressinthe fieldhasbeenheldupbythelackofasuitablecarrier.??The HIVvirushastheabilitytoescapefromandthendestroytheimmunedefense cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientists asawayofsecretlyconveyingreplacementgenesintopatients’ bodies.FDAhasapprovedtheplanofusingHIVtocurecancerinhumans.
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{{*HTML*}}? ?下面有3篇短文每篇短文后有5道题每道题后面有4个选项请根据文章的内容从每题所给的4个选项中选择1个最佳答案{{B}}第一篇{{/B}} ?????????? {{B}}FirstAid{{/B}}??Firstaidisemergencycareforavictimof suddenillnessorinjuryuntilmoreskillfulmedicaltreatmentisavailable.It maysavealifeorimprovecertainvitalsignsincludingpulsetemperaturea clearairway气道andbreathing.Inminoremergenciesfirstaidmaypreventa victim’sconditionfromturningworseandproviderelieffrompain.Firstaid mustbeadministeredasquicklyaspossible.Inthecaseofthecritically injuredafewminutescanmakethedifferencebetweencompleterecoveryand lossoflife.??First-aidmeasuresdependuponavictim’sneeds andtheprovider’slevelofknowledgeandskill.Knowingwhatnottodoinan emergencyisasimportantasknowingwhattodo.Improperlymovingapersonwith aneckinjuryforexamplecanleadtopermanentspinal脊柱的injuryand paralysis瘫痪.??Despitethevarietyofinjuriespossible severalprinciplesoffirstaidapplytoallemergencies.Thefirststepisto cal*lforprofessionalmedicalhelp.Thevictimifconsciousshouldbe reassuredthatmedicalaidhasbeenrequestedandaskedforpermissionto provideanyfirstaid.Nextassessthesceneaskingotherpeopleorthe injuredperson’sfamilyorfriendsaboutdetailsoftheinjuryorillnessany carethatmayhavealreadybeengivenandpreexistingconditionssuchas diabetes糖尿病orhearttrouble.Thevictimshouldbecheckedforamedical bracelet手镯orcardthatdescribesspecialmedicalconditions.Unlessthe accidentscenebecomesunsafeorthevictimmaysufferfurtherinjurydonot movethevictim.??Firstaidrequiresrapidassessmentofvictims todeterminewhetherlife-threateningconditionsexist.Onemethodfor evaluatingavictim’sconditionisknownbytheacronym首字母缩写语ABCwhich standsfor:??A-Airway:isitopenandclear??? B-Breathing:isthepersonbreathing?Looklistenandfeelfor breathing.??C-Circulation:isthereapulse?Istheperson bleedingexternally?Checkskincolorandtemperatureforadditionalindications ofcirculationproblems.Beforeweadministerfirstaidtoavictimitisveryimportantforus
{{*HTML*}}? ?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3～6段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ?????{{B}}ExercisingYourMemory{{/B}}1 ?Agingdoesnotmeanadramaticdeclineinmemorypowerunlessyouhelpit happenbylettingyourmindgo.2?That’snottosaythatmemorydoesn’t changethroughoutlife.Researchersdividememoryintocategoriesbasedonthe lengthoftimewhenmemoriesarestored.Onesystemdividesitupasshort-term lessthanoneminute;rememberingatelephonenumberwhileyoudialfor instancelong-termoveraperiodofyearsandverylong-termmemoryovera lifetime.3?Short-termmemoryisn’tmastereduntilaboutage7but afterthatyouneverloseit.Long-termmemoryhoweverinvolvesmoreeffort andskillandchangesmorethroughlife.It’snotuntiltheearlyteens十几岁 thatmostpeopledevelopamaturelong-termmemory.4?Firstwemust getinformationintoourheadsthroughlearning.Learningstrategiescanget rusty生锈withoutconstantuse.Highschoolandcollegestudentswhoare forcedtorepeatedlyexercisetheirlongtermmemoryabilitiesatleast long-termenoughtogetthemthroughafinalexamusuallydowellonmemory tests.Thelongeryoustayinschoolthemorechanceyougettopolishyour learningskills.It’snowonderthatmorehighlyeducatedpeoplehavemore effectivememoryskillsthroughoutlife.5?Althougholderpeoplein generallearnsomewhatmoreslowlythantheydidwhenyoungeradramatic differenceexistsbetweenthosewhostayintellectuallyactivemreading discussingtakingclassesthinking—andthosewhodonot.Givingthebraina dailyworkout锻炼isjustasimportantasexercisingyourmuscles.Brainwork keepsyourlearningstrategiesinshapeandthishelpsyourmemorytofunction atfullcapacity.6?Thenextpartofahealthylong-termmemoryis retention记忆力theabilitytostorewhatyouhavelearned.Memoryresearchers stilldonotknowwhethermemoriesarelost—whethertheystillexistinthe brainbutourmentalsearchingcannotturnthemuporhavedisappearedentirely asourbrainages.7?Thethirdnecessityformemoryisrecallthe abilitytobringtomindthememorieswehavestored.Againwhileaginghas widelydifferenteffectsontherecallabilitiesofdifferentpeopleresearch indicatesthattheolderwegetthelongerittakestorecallfacts.Butslower recallisstillrecall.Infactagingdoesnotseemtohaveanyeffecton forgettingatallwhichtakesplaceatthesamerateinyoungerandolder people.Paragraph6______
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
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{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ?{{B}}StressatWorkandStillHealthy{{/B}}??Thetermcouldyet becomethewordoftheyear:stressisoneveryone’slipsthesedaysand everywhere.Notonlymanagersofficialsandteachersarecomplainingnowadays housewiveschildrenandpensionersnowalsohavetheirownproblems.Theytoo sacrificethemselvesforothersfeelunder-oroverworkedandquicklylose theirinnerbalance.Irritationtirednessandexhaustionquicklyfollow.But thatisonlythenegativeaspect.Stressafterallisalsolinkedtopositive termssuchasjoyoflifetensionandvitality活力.??Firstly stressishealthysaysWolfgangStehlingfromEItvelle.Thedoctorand managementconsultantsays:Itoccurswhenthebodylosesitsinnerbalance butthenstresshormonesareproducedtore-establishthebalance.Thusstress isnothingmorethanapositivereactionofthebodytopressure.Itis unavoidableaspartofournature:Thereisnosuchthingasastress-free life.??Butwhetherstressleadstotensionsinthemindorto tensenessofthemusclesdependsontheduration持续时间itscauseorcausesand thesufferer’spersonalsituation.Peoplewhohavetroublesleepingorsuffer frombadmoodsorsimplythefluwillnotbeontopoftheworldandwilltake everylittlestrifeasnegativestress.Otherspeoplewhofeelrefreshedat everynewturnarerelaxedandsuccessfulwillviewadifficultroundof negotiationsorcompetitionatworkmoreasapositivechallengethanacrossto bear.??Exercisehealthyeatingandrelaxationarethusthethree pillarsbywhichstresscanbeconqueredalmosteverytime.Thesefactorsforma unitexplainsMaritaVoelker-Albertspokeswomanforthegovernment’sNutrition AdviceCenterinCologne.ItscampaignGutDraufFeelingGoodistargetedat youngpeople.Thegovernmentagency’sresearchsuggeststhatthreeoutoffour adolescentsfeeltiredovertaxed负担过重andunderstress.Eatingdisordersand complaintssuchasmigraines偏头痛andindigestion消化不良nervousnessand concentrationproblemshaveincreasedamong12-to16-year-olds.? ?Buteventhebestsolutionsdon’tworkiftheyarenotputintopractice saysStehling.Anybodywhogoesjoggingregularlypracticesyoga瑜伽功and prescribesgoodliteratureasacurefornegativestressmaywellendupunder morepressureashetriestofindthetimeforitall.Sometimessaysthe consultantithelpstotaketimeouttoreducestresslevelsovera weekend.WhichofthefollowingisNOTmentionedasapossiblecurefornegativestress?
{{*HTML*}}{{B}}第二篇{{/B}} ??????? ?{{B}}StressatWorkandStillHealthy{{/B}}??Thetermcouldyet becomethewordoftheyear:stressisoneveryone’slipsthesedaysand everywhere.Notonlymanagersofficialsandteachersarecomplainingnowadays housewiveschildrenandpensionersnowalsohavetheirownproblems.Theytoo sacrificethemselvesforothersfeelunder-oroverworkedandquicklylose theirinnerbalance.Irritationtirednessandexhaustionquicklyfollow.But thatisonlythenegativeaspect.Stressafterallisalsolinkedtopositive termssuchasjoyoflifetensionandvitality活力.??Firstly stressishealthysaysWolfgangStehlingfromEItvelle.Thedoctorand managementconsultantsays:Itoccurswhenthebodylosesitsinnerbalance butthenstresshormonesareproducedtore-establishthebalance.Thusstress isnothingmorethanapositivereactionofthebodytopressure.Itis unavoidableaspartofournature:Thereisnosuchthingasastress-free life.??Butwhetherstressleadstotensionsinthemindorto tensenessofthemusclesdependsontheduration持续时间itscauseorcausesand thesufferer’spersonalsituation.Peoplewhohavetroublesleepingorsuffer frombadmoodsorsimplythefluwillnotbeontopoftheworldandwilltake everylittlestrifeasnegativestress.Otherspeoplewhofeelrefreshedat everynewturnarerelaxedandsuccessfulwillviewadifficultroundof negotiationsorcompetitionatworkmoreasapositivechallengethanacrossto bear.??Exercisehealthyeatingandrelaxationarethusthethree pillarsbywhichstresscanbeconqueredalmosteverytime.Thesefactorsforma unitexplainsMaritaVoelker-Albertspokeswomanforthegovernment’sNutrition AdviceCenterinCologne.ItscampaignGutDraufFeelingGoodistargetedat youngpeople.Thegovernmentagency’sresearchsuggeststhatthreeoutoffour adolescentsfeeltiredovertaxed负担过重andunderstress.Eatingdisordersand complaintssuchasmigraines偏头痛andindigestion消化不良nervousnessand concentrationproblemshaveincreasedamong12-to16-year-olds.? ?Buteventhebestsolutionsdon’tworkiftheyarenotputintopractice saysStehling.Anybodywhogoesjoggingregularlypracticesyoga瑜伽功and prescribesgoodliteratureasacurefornegativestressmaywellendupunder morepressureashetriestofindthetimeforitall.Sometimessaysthe consultantithelpstotaketimeouttoreducestresslevelsovera weekend.Whowilleasilytakeeverylittlestrifeasnegativestress?
{{*HTML*}}??阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子做出判断 ??????? ????????{{B}}UsingHIVVirusto CureCancer{{/B}}??Scientistsareplanningtousehuman immunodeficiency免疫缺陷virusHIVoneofmankind’smostfearedvirusesasa carrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbe cured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebody’s immune免疫的defensesmakingitidealforcarryingreplacementgenesinto patients’bodiesaccordingtotheObserver.??Ateamatthe California-basedSalkInstituteoneoftheworld’sleadingresearchcenterson biologicalscienceshascreatedaspecialnewbreedofHIVandhasstarted negotiationswiththeU.S.FoodandDrugAdministrationFDAtobeginclinical genetherapy治疗trialsthisyear.Thefirsttrialsareexpectedtoinvolve patientssufferingfromcancersthatcannotbecuredbysurgeryalthoughproject leaderProfessorInderVermasaidtheHIVtechniquewouldhavefarwider applications.??Theplanremainsverylikelytocausecontroversy sinceitinvolvesmakinguseofaviruswhichhascausedmorethan22million deathsaroundtheworldinthepasttwodecades.Vermasaidthattheideaof usingHIVforabeneficialpurposewasshockingbutthefiercenatureofHIV haddisappearedbyhavingallsixofthepotentiallydeadlygenes removed.??Illnessessuchasvariouscancersarecausedwhena geneinapatient’sbodyfailstoworkproperly.Inthepasttwoyears breakthroughsingenetics遗传学haveledgenetherapyscientiststotryand replacethegenesthatdonotfunctionnormally.??Unfortunately thebody’simmunedefenseshavebeenknowntoattackthemodifiedgenesandmake themlosetheireffectsbeforetheycanstarttheirtaskandprogressinthe fieldhasbeenheldupbythelackofasuitablecarrier.??The HIVvirushastheabilitytoescapefromandthendestroytheimmunedefense cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientists asawayofsecretlyconveyingreplacementgenesintopatients’ bodies.HIVcanbesafelyusedtocurecanceronlyifthedeadlygeneshavebeenremoved.
{{*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}}ANewMedicinetoTreatBothAIDSandHepatitisB{{/B}}? ?AmedicineapprovedlastmonthtotreatAIDS艾滋病alsoshowspromise againsthepatitisB乙型肝炎.??Thedrug3TCputsdownthe hepatitisBvirusinpeoplewithchronicinfectionsstoppingitsdamagetothe liverresearchersreported.??AboutonemillionAmericansare thoughttobeinfectedwithhepatitisBwhichcanleadtocirrhosis肝硬化 liverfailureandlivercancerinasmallproportionofvictimsifleft untreated.{{U}}?46?{{/U}}??It’sapreliminarystudy butthisispromising.Itlookslikeithasthepotentialtomakeasignificant impactonhepatitisBsaidDrJulesL.DienstagofMassachusettsGeneral Hospitalwhodirectedthestudy.??Currentlytheonlytreatment forhepatitisBisinterferon干扰素.Suchatreatmentcanpermanentlyeliminate thevirusinaboutone-thirdofpatients.{{U}}?47?{{/U}}? ?Inthelateststudydoctorsfoundthat3TCappearedtoknockoutthe viruspermanentlyinabout20%ofpatientswhengivenforthreemonths.{{U}} ?48?{{/U}}??Unlikeinterferon3TCisgiveninpill formandcarriesfewsideeffects.ThedrugwasapprovedbytheFoodandDrug AdministrationinNovemberforuseagainstAIDS.??Boththe hepatitisBvirusandtheAIDSvirusneedaproteintoreproduce.{{U}}?49 ?{{/U}}DoctorshavetestedsimilarAIDSdrugsagainsthepatitisB.Butall except3TChaveturnedouttobeineffectiveortootoxic有毒的.? ?DrJayHoofnagleoftheNationalInstitutesofHealthsaidanextstep willbetocombine3TCwithinterferontoseeifthetwodrugstogetherimprove thechanceofcuringhepatitisB.Itlooksextremelypromisinghesaidof 3TC.{{U}}?50?{{/U}}A．3TCisoneofagroupofdrugsthatblock productionofthisprotein.B．Interferonmustbeinjectedforfourtosix monthsandoftenhasunpleasantsideeffectsincludingflu-likesymptoms fatigueanddepression.C．Thehospitalisamongthebiggestonesin America.D．Dienstagsaidhehopesthatwithlongertreatmentthisresponse ratecanbedoubled.E．It’snottheanswerbutit’sastepintheright direction.F．Perhaps20%ofthesepatientshavelingering迁延性的infections thatwouldbenefitfromtreatment.
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
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{{*HTML*}}? ?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3～6段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ?????{{B}}ExercisingYourMemory{{/B}}1 ?Agingdoesnotmeanadramaticdeclineinmemorypowerunlessyouhelpit happenbylettingyourmindgo.2?That’snottosaythatmemorydoesn’t changethroughoutlife.Researchersdividememoryintocategoriesbasedonthe lengthoftimewhenmemoriesarestored.Onesystemdividesitupasshort-term lessthanoneminute;rememberingatelephonenumberwhileyoudialfor instancelong-termoveraperiodofyearsandverylong-termmemoryovera lifetime.3?Short-termmemoryisn’tmastereduntilaboutage7but afterthatyouneverloseit.Long-termmemoryhoweverinvolvesmoreeffort andskillandchangesmorethroughlife.It’snotuntiltheearlyteens十几岁 thatmostpeopledevelopamaturelong-termmemory.4?Firstwemust getinformationintoourheadsthroughlearning.Learningstrategiescanget rusty生锈withoutconstantuse.Highschoolandcollegestudentswhoare forcedtorepeatedlyexercisetheirlongtermmemoryabilitiesatleast long-termenoughtogetthemthroughafinalexamusuallydowellonmemory tests.Thelongeryoustayinschoolthemorechanceyougettopolishyour learningskills.It’snowonderthatmorehighlyeducatedpeoplehavemore effectivememoryskillsthroughoutlife.5?Althougholderpeoplein generallearnsomewhatmoreslowlythantheydidwhenyoungeradramatic differenceexistsbetweenthosewhostayintellectuallyactivemreading discussingtakingclassesthinking—andthosewhodonot.Givingthebraina dailyworkout锻炼isjustasimportantasexercisingyourmuscles.Brainwork keepsyourlearningstrategiesinshapeandthishelpsyourmemorytofunction atfullcapacity.6?Thenextpartofahealthylong-termmemoryis retention记忆力theabilitytostorewhatyouhavelearned.Memoryresearchers stilldonotknowwhethermemoriesarelost—whethertheystillexistinthe brainbutourmentalsearchingcannotturnthemuporhavedisappearedentirely asourbrainages.7?Thethirdnecessityformemoryisrecallthe abilitytobringtomindthememorieswehavestored.Againwhileaginghas widelydifferenteffectsontherecallabilitiesofdifferentpeopleresearch indicatesthattheolderwegetthelongerittakestorecallfacts.Butslower recallisstillrecall.Infactagingdoesnotseemtohaveanyeffecton forgettingatallwhichtakesplaceatthesamerateinyoungerandolder people.Exercisingyourbraineverydayisbeneficial______.
{{*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}}ASpecialClock{{/B}}??Everylivingthinghaswhat scientistscallabiologicalclockthatcontrolsbehavior.Thebiologicai clock______51plantswhentoformflowersandwhentheflowersshouldopen.It tellsinsectswhento______52theprotectivecocoon防护卵袋andflyawayand ittellsanimalsandhumanbeingswhentoeatsleepandwake.? ?Eventsoutsidetheplantandanimal______53theactionsofsome biologicalclocks.Scientistsrecentlyfoundforexamplethatatinyanimal changesthecolorofitsfurbecauseofthe______54ofhoursofdaylight.In theshort______55ofwinteritsfurbecomeswhite.Thefurbecomesgraybrown in______56inthelongerhoursofdaylightinsummer.??Inner signalscontrolother______57clocks.Germanscientistsfoundthatsomekind ofinternalclockseems’toorderbirdstobegintheirlongmigration______58 twiceeachyear.Birds______59fromflyingbecomerestlesswhenitistimefor thetrip______60theybecomecalmagainwhenthetimeoftheflighthas ended.??Scientistssaytheyarebeginningtolearn which______61ofthebraincontainbiologicalclocks.AnAmericanresearcher MartinMoorheadsaidasmallgroupofcellsnearthefrontofthe brain______62tocontrolthetimingofsomeofouractions.These______63 tellapersonwhentowakewhento______64andwhentoseekfood.Scientists saythereprobablyareotherbiologicalclockCellsthat______65otherbody activities.
{{*HTML*}}{{B}}第三篇{{/B}} ??????? ???{{B}}IstheNewsBelievable?{{/B}}??Unlessyou havegonethroughtheexperienceyourselforwatchedalovedone’sstruggle youreallyhavenoideajusthowdesperatecancercanmakeyou.Youprayyou rageyoubargainwithGodbutmostofallyouclutchatanyhopenomatter howremoteofasecondchanceatlife.??Forafewexciteddays lastweekhoweveritseemedasifthewholeworldwasacancerpatientand thatallhumankindhadbeengrantedareprieve痛苦减轻.Triggeredbyafront-page medicalnewsstoryintheusuallyreservedNewYorkTimesallanybodywas talkingabout—ontheradioontelevisionontheInternetinphonecallsto friendsandrelatives—wasthereportthatacombinationoftwonewdrugs couldastheTimesputitcurecancerintwoyears.??Ina matterofhourspatientshadjammedtheirdoctors’phonelinesbeggingfora chancetotestthemiraclecancercure.Cancerscientistsracedtothephonesto makesureeveryoneknewabouttheirresearchtoogeneratinganewroundof headlines.??Thetimecertainlyseemedripeforabreakthroughin cancer.OnlylastmonthscientistsattheNationalCancerInstituteannounced thattheywerehaltingaclinicaltrialofadrugcalledtamoxifen他莫昔芬—and offeringittopatientsgettingtheplacebo安慰剂—becauseithadprovedso effectiveatpreventingbreastcanceralthoughitalsoseemedtoincreasethe riskofuterine子宫的cancer.TwoweekslatercametheNewYorkTimes’report thattwonewdrugscanshrinktumorsofeveryvarietywithoutanysideeffects whatsoever.??Itallseemedtoogoodtobetrueandofcourseit was.Therearenomiraclecancerdrugsatleastnotyet.Atthisstageallthe drugmanufacturercanofferissomeveryinterestingmoleculesandtheonly cancerstheyhavecuredsofarhavebeeninmice.BYthemiddleoflastweek eventheTVtalk-showhostswhotalkedmostaboutthenewshadlearnedwhat everyscientistalreadyknew:thatcuringadiseaseinlabanimalsisnotthe sameasdoingitinhumans.Thehistoryofcancerresearchhasbeenahistory ofcuringcancerinthemouseDr.RichardKlausnerheadoftheNational CancerInstitutetoldtheLosAngelesTimes.Wehavecuredmiceofcancerfor decades—anditsimplydidn’tworkinpeople.Inthefirstsentenceofthelastparagraphitwasmeans
{{*HTML*}}? ?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3～6段每段选择1个正确的小标题2第27～30题要求从所给的6个选项中选择4个正确选项分别完成每个句子 ?????????? ?????{{B}}ExercisingYourMemory{{/B}}1 ?Agingdoesnotmeanadramaticdeclineinmemorypowerunlessyouhelpit happenbylettingyourmindgo.2?That’snottosaythatmemorydoesn’t changethroughoutlife.Researchersdividememoryintocategoriesbasedonthe lengthoftimewhenmemoriesarestored.Onesystemdividesitupasshort-term lessthanoneminute;rememberingatelephonenumberwhileyoudialfor instancelong-termoveraperiodofyearsandverylong-termmemoryovera lifetime.3?Short-termmemoryisn’tmastereduntilaboutage7but afterthatyouneverloseit.Long-termmemoryhoweverinvolvesmoreeffort andskillandchangesmorethroughlife.It’snotuntiltheearlyteens十几岁 thatmostpeopledevelopamaturelong-termmemory.4?Firstwemust getinformationintoourheadsthroughlearning.Learningstrategiescanget rusty生锈withoutconstantuse.Highschoolandcollegestudentswhoare forcedtorepeatedlyexercisetheirlongtermmemoryabilitiesatleast long-termenoughtogetthemthroughafinalexamusuallydowellonmemory tests.Thelongeryoustayinschoolthemorechanceyougettopolishyour learningskills.It’snowonderthatmorehighlyeducatedpeoplehavemore effectivememoryskillsthroughoutlife.5?Althougholderpeoplein generallearnsomewhatmoreslowlythantheydidwhenyoungeradramatic differenceexistsbetweenthosewhostayintellectuallyactivemreading discussingtakingclassesthinking—andthosewhodonot.Givingthebraina dailyworkout锻炼isjustasimportantasexercisingyourmuscles.Brainwork keepsyourlearningstrategiesinshapeandthishelpsyourmemorytofunction atfullcapacity.6?Thenextpartofahealthylong-termmemoryis retention记忆力theabilitytostorewhatyouhavelearned.Memoryresearchers stilldonotknowwhethermemoriesarelost—whethertheystillexistinthe brainbutourmentalsearchingcannotturnthemuporhavedisappearedentirely asourbrainages.7?Thethirdnecessityformemoryisrecallthe abilitytobringtomindthememorieswehavestored.Againwhileaginghas widelydifferenteffectsontherecallabilitiesofdifferentpeopleresearch indicatesthattheolderwegetthelongerittakestorecallfacts.Butslower recallisstillrecall.Infactagingdoesnotseemtohaveanyeffecton forgettingatallwhichtakesplaceatthesamerateinyoungerandolder people.Therateofforgettingisthesame______.
{{*HTML*}}??阅读下面这篇短文短文后列出了7个句子请根据短文的内容对每个句子做出判断 ??????? ????????{{B}}UsingHIVVirusto CureCancer{{/B}}??Scientistsareplanningtousehuman immunodeficiency免疫缺陷virusHIVoneofmankind’smostfearedvirusesasa carrierofgeneswhichcanfightcancerandarangeofdiseasesthatcannotbe cured.TheexpertssayHIVhasanalmostperfectabilitytoavoidthebody’s immune免疫的defensesmakingitidealforcarryingreplacementgenesinto patients’bodiesaccordingtotheObserver.??Ateamatthe California-basedSalkInstituteoneoftheworld’sleadingresearchcenterson biologicalscienceshascreatedaspecialnewbreedofHIVandhasstarted negotiationswiththeU.S.FoodandDrugAdministrationFDAtobeginclinical genetherapy治疗trialsthisyear.Thefirsttrialsareexpectedtoinvolve patientssufferingfromcancersthatcannotbecuredbysurgeryalthoughproject leaderProfessorInderVermasaidtheHIVtechniquewouldhavefarwider applications.??Theplanremainsverylikelytocausecontroversy sinceitinvolvesmakinguseofaviruswhichhascausedmorethan22million deathsaroundtheworldinthepasttwodecades.Vermasaidthattheideaof usingHIVforabeneficialpurposewasshockingbutthefiercenatureofHIV haddisappearedbyhavingallsixofthepotentiallydeadlygenes removed.??Illnessessuchasvariouscancersarecausedwhena geneinapatient’sbodyfailstoworkproperly.Inthepasttwoyears breakthroughsingenetics遗传学haveledgenetherapyscientiststotryand replacethegenesthatdonotfunctionnormally.??Unfortunately thebody’simmunedefenseshavebeenknowntoattackthemodifiedgenesandmake themlosetheireffectsbeforetheycanstarttheirtaskandprogressinthe fieldhasbeenheldupbythelackofasuitablecarrier.??The HIVvirushastheabilitytoescapefromandthendestroytheimmunedefense cellsdesignedtoprotectourbodiesandthismakesitattractivetoscientists asawayofsecretlyconveyingreplacementgenesintopatients’ bodies.Othercountriesarealsoexpectedtobeginclinicalgenetherapytrialssoon.
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