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StressLevelTiedtoEducationLevel PeoplewithlesseducationsufferfewerstressfuldaysaccordingtoareportinthecurrentissueoftheJournalofHealthandSocialBehavior. Howeverthestudyalsofoundthatwhenless-educatedpeopledidsufferstressitwasmoresevereandhadalargerimpactontheirhealth. Fromthisresearchershaveconcludedthattheday-to-dayfactorsthatcausestressarenotrandom.Whereyouareinsocietydeterminesthekindsofproblemsthatyouhaveeachdayandhowwellyouwillcopewiththem. Theresearchteaminterviewedanationalsampleof1031adultsdailyforeightdaysabouttheirstresslevelandhealth.Peoplewithoutahighschooldiplomareportedstresson30percentofthestudydayspeoplewithahighschooldegreereportedstress38percentofthetimeandpeoplewithcollegedegreesreportedstress44percentofthetime. Lessadvantagedpeoplearelesshealthyonadailybasisandaremorelikelytohavedownwardturnsintheirhealth.leadresearcherDr.JosephGrzywaczofWakeForestUniversityBaptistMedicalCentersaidinapreparedstatement.Thedownwardturnsinhealthwereconnectedwithdailystressorsandtheeffectofdailystressorsontheirhealthismuchmoredevastatingforthelessadvantaged. Grzywaczsuggestedfollow-upresearchtodeterminewhyless-educatedpeoplereportfewerdaysofstresswhenitisknowntheirstressismoreacuteandchronic. Ifsomethinghappenseverydaymaybeit’’snotseenasastressorGrzywaczsays.Maybeitisjustlife. stressfuladj.紧张的压力重的 diploman.毕业文凭毕业证书 stressorn.紧张刺激物 devastatingadj.毁灭性的 follow-upn.对病人的随访 Stressleveliscloselyrelatedto______.
ModernDrugs Doctorssixtyyearsagocoulddolittletohelpvictimsofpolio.Seriouscasesusuallyendedindeath.In1955avaccinewasdevelopedthatpreventedthedisease.Todaypolioisnolongeramajorhealthproblem. Manyofthemostimportantdrugsthatdoctorsprescribetodayhavebeendevelopedinthelast30years.Moderndrugsarecomplexspecificandpowerful.Peopleneedtoknowmoreaboutdrugsinordertousethemsafely. Earlypeoplediscoveredbyaccidentthatsomeoftheplantsgrowingaroundthemseemedusefultohealsoresrelievepainorevencurediseases.Theseplantswerethefirstdrugs.Nowplantsarestillthesourceofsomedrugs.Quinineforexampleisabitter-tastingdrugusedtotreatthechillsandfeverofmalariaandtoreduceattacksofthedisease.ItismadefromthebarkofthecinchonatreewhichgrowsintheAndesMountains.TheIndiansofthatregionwerethefirsttousethebarkasamedicine.TheSpanishpeopleprobablybroughtittoEuropeintheearly1600s.Chemistslearnedhowtogetthepuredrugfromthebarkandin1944;itwasmadeartificiallyinthelaboratory. Otherimportantdrugssuchashormonesandvaccinesareobtainedfromanimals.Butmostofthemoderndrugscomefromchemicalcombinationsworkedoutbyresearchscientists.Mostpeopleneverseedrugsintheirsimpleformaschemicals.Insteadtheyareseenastabletscapsulesorliquidsthatcontainthedrugandotheringredients. Peopleusedrugstogetdifferentresults.Somedrugsattacktheorganismthatcausesadisease.Theycurebykillingtheorganism.Otherdrugsrelievewhatwecallthesymptomsofthedisease:theheadachepainfeverorchillsandmakethepatientmorecomfortable.Theseconstitutemostover-the-counterdrugs.Peoplecangetthemindrugstores. Itseemstotheauthorthatthemedicineusedbyearlypeople______.
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. Whichofthefollowingsubstancesisnotaninvadertothebody’simmunesystem?
NewTechniquePromisesEarlierCancerDetection AnewtechniquecouldrevolutionizetheearlydetectionofcancergivingsufferersagreaterchanceofbeatingthediseaseAmericanscientistssaid.ResearchersattheMassachusettsInstituteofTechnologyhavedevisedanovelmethodof【51】changesinthenucleusofcellsintheearlieststagesofthedisease.Morethan85percentofallcancersoriginateintheepithelium上皮thatlinestheinternalsurfacesoforgans【52】thebody.Althoughthesearetreatable【53】theyarediagnosedinoneofthepreventablestagesearlybodydamagesarealmost【54】todetectsaidscientistFeld.Wepresentanewoptical-probe光学探子techniquebasedonlight-scatteringspectroscopy分光镜检查thatisable【55】detectprecancerousandearlycancerouscellsincell-richepitheliaheaddedinastatement. Thenewtechniquereliesonthefact【56】cellnucleichangeintheearlystagesofcancerandthedifferencesscatterlightinacharacteristicway.Untilnowthechangeswereonlydetectable【57】abiopsy活检wastakenthescientistssaid.Thenewtechnique【58】inthesciencejournalNaturecanbeusedinconjunctionwitharoutinecancerscreeningandsurveillancetechniquewhichusesanendoscope内窥镜—aflexibleopticalprobe【59】withcameraswhichisinsertedintoacavityinthebody—tocheck【60】cancers. Thescientistssaidthey【61】theirnewtechniqueinfourdifferentorgansduringroutineendoscopiccancerscreening.Thetipoftheopticalprobewasbroughtintocontactwiththetissuetobetestedandthescatteringoflightwasrecordedwithouttheneedforanytissuetobe【62】thescientistssaid.Ourresultsshowthatlight-scatteringspectroscopyhasthepotentialtodetectpre-cancerousbodydamagesandpreinvasivecancersthroughoutthebody.Thistechniqueshould【63】improvetheefficiencyofcancerscreeningandsurveillancethescientistssaid.Cancerisoneofthebiggest【64】inindustrializedcountries.【65】tofiguresfromtheWorldHealthOrganization10millionpeoplewerediagnosedwiththediseaseworldwidein1997andsixmilliondied.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
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. WhichofthefollowingfunctionsdoneNOTbelongtoantibodies?
NewTechniquePromisesEarlierCancerDetection AnewtechniquecouldrevolutionizetheearlydetectionofcancergivingsufferersagreaterchanceofbeatingthediseaseAmericanscientistssaid.ResearchersattheMassachusettsInstituteofTechnologyhavedevisedanovelmethodof【51】changesinthenucleusofcellsintheearlieststagesofthedisease.Morethan85percentofallcancersoriginateintheepithelium上皮thatlinestheinternalsurfacesoforgans【52】thebody.Althoughthesearetreatable【53】theyarediagnosedinoneofthepreventablestagesearlybodydamagesarealmost【54】todetectsaidscientistFeld.Wepresentanewoptical-probe光学探子techniquebasedonlight-scatteringspectroscopy分光镜检查thatisable【55】detectprecancerousandearlycancerouscellsincell-richepitheliaheaddedinastatement. Thenewtechniquereliesonthefact【56】cellnucleichangeintheearlystagesofcancerandthedifferencesscatterlightinacharacteristicway.Untilnowthechangeswereonlydetectable【57】abiopsy活检wastakenthescientistssaid.Thenewtechnique【58】inthesciencejournalNaturecanbeusedinconjunctionwitharoutinecancerscreeningandsurveillancetechniquewhichusesanendoscope内窥镜—aflexibleopticalprobe【59】withcameraswhichisinsertedintoacavityinthebody—tocheck【60】cancers. Thescientistssaidthey【61】theirnewtechniqueinfourdifferentorgansduringroutineendoscopiccancerscreening.Thetipoftheopticalprobewasbroughtintocontactwiththetissuetobetestedandthescatteringoflightwasrecordedwithouttheneedforanytissuetobe【62】thescientistssaid.Ourresultsshowthatlight-scatteringspectroscopyhasthepotentialtodetectpre-cancerousbodydamagesandpreinvasivecancersthroughoutthebody.Thistechniqueshould【63】improvetheefficiencyofcancerscreeningandsurveillancethescientistssaid.Cancerisoneofthebiggest【64】inindustrializedcountries.【65】tofiguresfromtheWorldHealthOrganization10millionpeoplewerediagnosedwiththediseaseworldwidein1997andsixmilliondied.
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. Whichofthefollowingstatementsisfalse?
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
UnitedNations AmajorsegmentoftheUntiedNationsistheGeneralAssemblywhichconsistsofrepresentativesfromallgovernmentsthathaveratifiedtheUNCharter.Asof1995185stateshadmembershipinthegeneralAssembly.AdditionallytheVaticanSwitzerlandandthePalestineLiberationOrganizationhavenonvotingobserverstatusintheGeneralAssembly.TheGeneralAssemblyapprovestheUN’’sbudgetactswiththeSecurityCounciltoselecttheSecretary-generalandjudgesoftheInternationalCourtofJusticeandpassesresolutionsonissuesrangingfromself-determinationandcolonialismtowomen’’srightsandtheglobaldistributionofwealth. TheGeneralAssemblycanmeetandvoteonanysubjectunlesstheSecurityCouncilisdealingwithitoratleastpretendingto.Howeveritsdecisionsonlycarrymoralforce—unliketheCouncil’’s.They’’renotbindingininternationallaws.ButtheAssemblyvotesareanimportantopinionpollonhowandwhatthemajorityoftheworldthinksaboutissues.Importantquestionsneedatwo-thirdsvoteoftheAssemblytopass. Thequestionofwhatisanimportantquestionisn’’timportant.Itsdecidedbythedelegatesthemselves—byasimplemajority. AlthoughtheGeneralAssemblyhasnotrecognizedauthoritytoenforceitsconclusionsonanythingotherthaninternalUNmattersitmakesitsviewpointsonissuesthatarebroughtbeforeitisknowninoneofthethreeways.AGeneralAssemblydeclarationisabroadstatementofgeneralprinciplesuchastheUniversalDeclarationofHumanRightspassedin1948.Declarationsareoftenputforwardasanexpressionofanidealinpracticetheyareregularlyignored.AGeneralAssemblyresolutionisessentiallyadocumentthatrecommendsthatmemberstatestakeaparticularpolicyaction.StatesclaimsovereigntyandmaketheirowndecisionsastowhethertheywillfollowaGeneralAssemblyresolution.Insomecaseshoweverifmanystatesimplementaparticularresolutionotherstatesthatmaynotwishtoactontheresolutionmayfeelthemselvespressuredtodosoanyway.Attheveryleastaresolutionhastheeffectoflegitimizingthepoliciesofthosestatesthatwishtocomplywiththeresolution.FinallyaGeneralAssemblyconventionortreatyhastwomeanings.ThemorecomprehensiveconventionreferstomultilateraltreatiesvotedonbytheGeneralAssemblythatuponpassagebytheGeneralAssemblyarecarriedbacktothecapitalsofmemberstatesforratificationbywhatevermeanseachstateusesdomestically.InothercasesaGeneralAssemblyconventionrefersspecificallytoatreatysignedbetweentheUnitedNationsandthegovernmentofanation-stateaswhenin1956EgyptagreedtoallowUnitedNationspeacekeepingforcestoenterEgyptianterritory. ThePassageofimportantissuesisdecidedbyatwo-thirdsvoteoftheAssembly.
NewTechniquePromisesEarlierCancerDetection AnewtechniquecouldrevolutionizetheearlydetectionofcancergivingsufferersagreaterchanceofbeatingthediseaseAmericanscientistssaid.ResearchersattheMassachusettsInstituteofTechnologyhavedevisedanovelmethodof【51】changesinthenucleusofcellsintheearlieststagesofthedisease.Morethan85percentofallcancersoriginateintheepithelium上皮thatlinestheinternalsurfacesoforgans【52】thebody.Althoughthesearetreatable【53】theyarediagnosedinoneofthepreventablestagesearlybodydamagesarealmost【54】todetectsaidscientistFeld.Wepresentanewoptical-probe光学探子techniquebasedonlight-scatteringspectroscopy分光镜检查thatisable【55】detectprecancerousandearlycancerouscellsincell-richepitheliaheaddedinastatement. Thenewtechniquereliesonthefact【56】cellnucleichangeintheearlystagesofcancerandthedifferencesscatterlightinacharacteristicway.Untilnowthechangeswereonlydetectable【57】abiopsy活检wastakenthescientistssaid.Thenewtechnique【58】inthesciencejournalNaturecanbeusedinconjunctionwitharoutinecancerscreeningandsurveillancetechniquewhichusesanendoscope内窥镜—aflexibleopticalprobe【59】withcameraswhichisinsertedintoacavityinthebody—tocheck【60】cancers. Thescientistssaidthey【61】theirnewtechniqueinfourdifferentorgansduringroutineendoscopiccancerscreening.Thetipoftheopticalprobewasbroughtintocontactwiththetissuetobetestedandthescatteringoflightwasrecordedwithouttheneedforanytissuetobe【62】thescientistssaid.Ourresultsshowthatlight-scatteringspectroscopyhasthepotentialtodetectpre-cancerousbodydamagesandpreinvasivecancersthroughoutthebody.Thistechniqueshould【63】improvetheefficiencyofcancerscreeningandsurveillancethescientistssaid.Cancerisoneofthebiggest【64】inindustrializedcountries.【65】tofiguresfromtheWorldHealthOrganization10millionpeoplewerediagnosedwiththediseaseworldwidein1997andsixmilliondied.
Hehadbeenforcedtogiveupmuchofhistimetohousework.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
Itshardtoalteroneshabits.
UnitedNations AmajorsegmentoftheUntiedNationsistheGeneralAssemblywhichconsistsofrepresentativesfromallgovernmentsthathaveratifiedtheUNCharter.Asof1995185stateshadmembershipinthegeneralAssembly.AdditionallytheVaticanSwitzerlandandthePalestineLiberationOrganizationhavenonvotingobserverstatusintheGeneralAssembly.TheGeneralAssemblyapprovestheUN’’sbudgetactswiththeSecurityCounciltoselecttheSecretary-generalandjudgesoftheInternationalCourtofJusticeandpassesresolutionsonissuesrangingfromself-determinationandcolonialismtowomen’’srightsandtheglobaldistributionofwealth. TheGeneralAssemblycanmeetandvoteonanysubjectunlesstheSecurityCouncilisdealingwithitoratleastpretendingto.Howeveritsdecisionsonlycarrymoralforce—unliketheCouncil’’s.They’’renotbindingininternationallaws.ButtheAssemblyvotesareanimportantopinionpollonhowandwhatthemajorityoftheworldthinksaboutissues.Importantquestionsneedatwo-thirdsvoteoftheAssemblytopass. Thequestionofwhatisanimportantquestionisn’’timportant.Itsdecidedbythedelegatesthemselves—byasimplemajority. AlthoughtheGeneralAssemblyhasnotrecognizedauthoritytoenforceitsconclusionsonanythingotherthaninternalUNmattersitmakesitsviewpointsonissuesthatarebroughtbeforeitisknowninoneofthethreeways.AGeneralAssemblydeclarationisabroadstatementofgeneralprinciplesuchastheUniversalDeclarationofHumanRightspassedin1948.Declarationsareoftenputforwardasanexpressionofanidealinpracticetheyareregularlyignored.AGeneralAssemblyresolutionisessentiallyadocumentthatrecommendsthatmemberstatestakeaparticularpolicyaction.StatesclaimsovereigntyandmaketheirowndecisionsastowhethertheywillfollowaGeneralAssemblyresolution.Insomecaseshoweverifmanystatesimplementaparticularresolutionotherstatesthatmaynotwishtoactontheresolutionmayfeelthemselvespressuredtodosoanyway.Attheveryleastaresolutionhastheeffectoflegitimizingthepoliciesofthosestatesthatwishtocomplywiththeresolution.FinallyaGeneralAssemblyconventionortreatyhastwomeanings.ThemorecomprehensiveconventionreferstomultilateraltreatiesvotedonbytheGeneralAssemblythatuponpassagebytheGeneralAssemblyarecarriedbacktothecapitalsofmemberstatesforratificationbywhatevermeanseachstateusesdomestically.InothercasesaGeneralAssemblyconventionrefersspecificallytoatreatysignedbetweentheUnitedNationsandthegovernmentofanation-stateaswhenin1956EgyptagreedtoallowUnitedNationspeacekeepingforcestoenterEgyptianterritory. TheGeneralAssemblymakesitsviewpointsintheGeneralAssemblyratification.
Peterwasanenergeticandathleticyouth.
StressLevelTiedtoEducationLevel PeoplewithlesseducationsufferfewerstressfuldaysaccordingtoareportinthecurrentissueoftheJournalofHealthandSocialBehavior. Howeverthestudyalsofoundthatwhenless-educatedpeopledidsufferstressitwasmoresevereandhadalargerimpactontheirhealth. Fromthisresearchershaveconcludedthattheday-to-dayfactorsthatcausestressarenotrandom.Whereyouareinsocietydeterminesthekindsofproblemsthatyouhaveeachdayandhowwellyouwillcopewiththem. Theresearchteaminterviewedanationalsampleof1031adultsdailyforeightdaysabouttheirstresslevelandhealth.Peoplewithoutahighschooldiplomareportedstresson30percentofthestudydayspeoplewithahighschooldegreereportedstress38percentofthetimeandpeoplewithcollegedegreesreportedstress44percentofthetime. Lessadvantagedpeoplearelesshealthyonadailybasisandaremorelikelytohavedownwardturnsintheirhealth.leadresearcherDr.JosephGrzywaczofWakeForestUniversityBaptistMedicalCentersaidinapreparedstatement.Thedownwardturnsinhealthwereconnectedwithdailystressorsandtheeffectofdailystressorsontheirhealthismuchmoredevastatingforthelessadvantaged. Grzywaczsuggestedfollow-upresearchtodeterminewhyless-educatedpeoplereportfewerdaysofstresswhenitisknowntheirstressismoreacuteandchronic. Ifsomethinghappenseverydaymaybeit’’snotseenasastressorGrzywaczsays.Maybeitisjustlife. stressfuladj.紧张的压力重的 diploman.毕业文凭毕业证书 stressorn.紧张刺激物 devastatingadj.毁灭性的 follow-upn.对病人的随访 Less—educatedpeoplereportfewerdaysofstresspossiblybecause______.
Heoftenfindsfaultwithmywork.
Itwasveryhardtograspwhatheactuallymeant.
Yourreasonsforrefusingtohelparequitevague.
NewTechniquePromisesEarlierCancerDetection AnewtechniquecouldrevolutionizetheearlydetectionofcancergivingsufferersagreaterchanceofbeatingthediseaseAmericanscientistssaid.ResearchersattheMassachusettsInstituteofTechnologyhavedevisedanovelmethodof【51】changesinthenucleusofcellsintheearlieststagesofthedisease.Morethan85percentofallcancersoriginateintheepithelium上皮thatlinestheinternalsurfacesoforgans【52】thebody.Althoughthesearetreatable【53】theyarediagnosedinoneofthepreventablestagesearlybodydamagesarealmost【54】todetectsaidscientistFeld.Wepresentanewoptical-probe光学探子techniquebasedonlight-scatteringspectroscopy分光镜检查thatisable【55】detectprecancerousandearlycancerouscellsincell-richepitheliaheaddedinastatement. Thenewtechniquereliesonthefact【56】cellnucleichangeintheearlystagesofcancerandthedifferencesscatterlightinacharacteristicway.Untilnowthechangeswereonlydetectable【57】abiopsy活检wastakenthescientistssaid.Thenewtechnique【58】inthesciencejournalNaturecanbeusedinconjunctionwitharoutinecancerscreeningandsurveillancetechniquewhichusesanendoscope内窥镜—aflexibleopticalprobe【59】withcameraswhichisinsertedintoacavityinthebody—tocheck【60】cancers. Thescientistssaidthey【61】theirnewtechniqueinfourdifferentorgansduringroutineendoscopiccancerscreening.Thetipoftheopticalprobewasbroughtintocontactwiththetissuetobetestedandthescatteringoflightwasrecordedwithouttheneedforanytissuetobe【62】thescientistssaid.Ourresultsshowthatlight-scatteringspectroscopyhasthepotentialtodetectpre-cancerousbodydamagesandpreinvasivecancersthroughoutthebody.Thistechniqueshould【63】improvetheefficiencyofcancerscreeningandsurveillancethescientistssaid.Cancerisoneofthebiggest【64】inindustrializedcountries.【65】tofiguresfromtheWorldHealthOrganization10millionpeoplewerediagnosedwiththediseaseworldwidein1997andsixmilliondied.
Althoughyouarebusyyoumustallowforyourhealth.
MylittledaughterkeptpullingmyhairandIwasreallyannoyed.
ModernDrugs Doctorssixtyyearsagocoulddolittletohelpvictimsofpolio.Seriouscasesusuallyendedindeath.In1955avaccinewasdevelopedthatpreventedthedisease.Todaypolioisnolongeramajorhealthproblem. Manyofthemostimportantdrugsthatdoctorsprescribetodayhavebeendevelopedinthelast30years.Moderndrugsarecomplexspecificandpowerful.Peopleneedtoknowmoreaboutdrugsinordertousethemsafely. Earlypeoplediscoveredbyaccidentthatsomeoftheplantsgrowingaroundthemseemedusefultohealsoresrelievepainorevencurediseases.Theseplantswerethefirstdrugs.Nowplantsarestillthesourceofsomedrugs.Quinineforexampleisabitter-tastingdrugusedtotreatthechillsandfeverofmalariaandtoreduceattacksofthedisease.ItismadefromthebarkofthecinchonatreewhichgrowsintheAndesMountains.TheIndiansofthatregionwerethefirsttousethebarkasamedicine.TheSpanishpeopleprobablybroughtittoEuropeintheearly1600s.Chemistslearnedhowtogetthepuredrugfromthebarkandin1944;itwasmadeartificiallyinthelaboratory. Otherimportantdrugssuchashormonesandvaccinesareobtainedfromanimals.Butmostofthemoderndrugscomefromchemicalcombinationsworkedoutbyresearchscientists.Mostpeopleneverseedrugsintheirsimpleformaschemicals.Insteadtheyareseenastabletscapsulesorliquidsthatcontainthedrugandotheringredients. Peopleusedrugstogetdifferentresults.Somedrugsattacktheorganismthatcausesadisease.Theycurebykillingtheorganism.Otherdrugsrelievewhatwecallthesymptomsofthedisease:theheadachepainfeverorchillsandmakethepatientmorecomfortable.Theseconstitutemostover-the-counterdrugs.Peoplecangetthemindrugstores. Itisimpliedinthepassagethatmostdrugscanbe______.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
StressLevelTiedtoEducationLevel PeoplewithlesseducationsufferfewerstressfuldaysaccordingtoareportinthecurrentissueoftheJournalofHealthandSocialBehavior. Howeverthestudyalsofoundthatwhenless-educatedpeopledidsufferstressitwasmoresevereandhadalargerimpactontheirhealth. Fromthisresearchershaveconcludedthattheday-to-dayfactorsthatcausestressarenotrandom.Whereyouareinsocietydeterminesthekindsofproblemsthatyouhaveeachdayandhowwellyouwillcopewiththem. Theresearchteaminterviewedanationalsampleof1031adultsdailyforeightdaysabouttheirstresslevelandhealth.Peoplewithoutahighschooldiplomareportedstresson30percentofthestudydayspeoplewithahighschooldegreereportedstress38percentofthetimeandpeoplewithcollegedegreesreportedstress44percentofthetime. Lessadvantagedpeoplearelesshealthyonadailybasisandaremorelikelytohavedownwardturnsintheirhealth.leadresearcherDr.JosephGrzywaczofWakeForestUniversityBaptistMedicalCentersaidinapreparedstatement.Thedownwardturnsinhealthwereconnectedwithdailystressorsandtheeffectofdailystressorsontheirhealthismuchmoredevastatingforthelessadvantaged. Grzywaczsuggestedfollow-upresearchtodeterminewhyless-educatedpeoplereportfewerdaysofstresswhenitisknowntheirstressismoreacuteandchronic. Ifsomethinghappenseverydaymaybeit’’snotseenasastressorGrzywaczsays.Maybeitisjustlife. stressfuladj.紧张的压力重的 diploman.毕业文凭毕业证书 stressorn.紧张刺激物 devastatingadj.毁灭性的 follow-upn.对病人的随访 Whichgroupreportedthebiggestnumberofstressfuldays?
UnitedNations AmajorsegmentoftheUntiedNationsistheGeneralAssemblywhichconsistsofrepresentativesfromallgovernmentsthathaveratifiedtheUNCharter.Asof1995185stateshadmembershipinthegeneralAssembly.AdditionallytheVaticanSwitzerlandandthePalestineLiberationOrganizationhavenonvotingobserverstatusintheGeneralAssembly.TheGeneralAssemblyapprovestheUN’’sbudgetactswiththeSecurityCounciltoselecttheSecretary-generalandjudgesoftheInternationalCourtofJusticeandpassesresolutionsonissuesrangingfromself-determinationandcolonialismtowomen’’srightsandtheglobaldistributionofwealth. TheGeneralAssemblycanmeetandvoteonanysubjectunlesstheSecurityCouncilisdealingwithitoratleastpretendingto.Howeveritsdecisionsonlycarrymoralforce—unliketheCouncil’’s.They’’renotbindingininternationallaws.ButtheAssemblyvotesareanimportantopinionpollonhowandwhatthemajorityoftheworldthinksaboutissues.Importantquestionsneedatwo-thirdsvoteoftheAssemblytopass. Thequestionofwhatisanimportantquestionisn’’timportant.Itsdecidedbythedelegatesthemselves—byasimplemajority. AlthoughtheGeneralAssemblyhasnotrecognizedauthoritytoenforceitsconclusionsonanythingotherthaninternalUNmattersitmakesitsviewpointsonissuesthatarebroughtbeforeitisknowninoneofthethreeways.AGeneralAssemblydeclarationisabroadstatementofgeneralprinciplesuchastheUniversalDeclarationofHumanRightspassedin1948.Declarationsareoftenputforwardasanexpressionofanidealinpracticetheyareregularlyignored.AGeneralAssemblyresolutionisessentiallyadocumentthatrecommendsthatmemberstatestakeaparticularpolicyaction.StatesclaimsovereigntyandmaketheirowndecisionsastowhethertheywillfollowaGeneralAssemblyresolution.Insomecaseshoweverifmanystatesimplementaparticularresolutionotherstatesthatmaynotwishtoactontheresolutionmayfeelthemselvespressuredtodosoanyway.Attheveryleastaresolutionhastheeffectoflegitimizingthepoliciesofthosestatesthatwishtocomplywiththeresolution.FinallyaGeneralAssemblyconventionortreatyhastwomeanings.ThemorecomprehensiveconventionreferstomultilateraltreatiesvotedonbytheGeneralAssemblythatuponpassagebytheGeneralAssemblyarecarriedbacktothecapitalsofmemberstatesforratificationbywhatevermeanseachstateusesdomestically.InothercasesaGeneralAssemblyconventionrefersspecificallytoatreatysignedbetweentheUnitedNationsandthegovernmentofanation-stateaswhenin1956EgyptagreedtoallowUnitedNationspeacekeepingforcestoenterEgyptianterritory. AnanwaschosenasUNSecretary-generalontheGeneralAssembly.
NewTechniquePromisesEarlierCancerDetection AnewtechniquecouldrevolutionizetheearlydetectionofcancergivingsufferersagreaterchanceofbeatingthediseaseAmericanscientistssaid.ResearchersattheMassachusettsInstituteofTechnologyhavedevisedanovelmethodof【51】changesinthenucleusofcellsintheearlieststagesofthedisease.Morethan85percentofallcancersoriginateintheepithelium上皮thatlinestheinternalsurfacesoforgans【52】thebody.Althoughthesearetreatable【53】theyarediagnosedinoneofthepreventablestagesearlybodydamagesarealmost【54】todetectsaidscientistFeld.Wepresentanewoptical-probe光学探子techniquebasedonlight-scatteringspectroscopy分光镜检查thatisable【55】detectprecancerousandearlycancerouscellsincell-richepitheliaheaddedinastatement. Thenewtechniquereliesonthefact【56】cellnucleichangeintheearlystagesofcancerandthedifferencesscatterlightinacharacteristicway.Untilnowthechangeswereonlydetectable【57】abiopsy活检wastakenthescientistssaid.Thenewtechnique【58】inthesciencejournalNaturecanbeusedinconjunctionwitharoutinecancerscreeningandsurveillancetechniquewhichusesanendoscope内窥镜—aflexibleopticalprobe【59】withcameraswhichisinsertedintoacavityinthebody—tocheck【60】cancers. Thescientistssaidthey【61】theirnewtechniqueinfourdifferentorgansduringroutineendoscopiccancerscreening.Thetipoftheopticalprobewasbroughtintocontactwiththetissuetobetestedandthescatteringoflightwasrecordedwithouttheneedforanytissuetobe【62】thescientistssaid.Ourresultsshowthatlight-scatteringspectroscopyhasthepotentialtodetectpre-cancerousbodydamagesandpreinvasivecancersthroughoutthebody.Thistechniqueshould【63】improvetheefficiencyofcancerscreeningandsurveillancethescientistssaid.Cancerisoneofthebiggest【64】inindustrializedcountries.【65】tofiguresfromtheWorldHealthOrganization10millionpeoplewerediagnosedwiththediseaseworldwidein1997andsixmilliondied.
{{*HTML*}}阅读下面的短文文中有15处空白每处空白给出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 TheWhiteHouse??Weget upearlythismorningand{{U}}?51?{{/U}}alongwalkafterbreakfast. Wewalkedthroughthebusinesssectionofthecity.Itoldyouyesterdaythat thecitywaslarger{{U}}?52?{{/U}}Ithoughtitwouldbe. {{U}}?53?{{/U}}thebusinesssectionissmallerthanIthoughtitwould be.Isupposethat’s{{U}}?54?{{/U}}Washingtonisaspecialkindof city.{{U}}?55?{{/U}}thepeopleinWashingtonworkforthegovernment. About9:30wewenttotheWhiteHouse.It’s{{U}}?56?{{/U}}tothe publicfrom10till12andtherewasalonglineofpeoplewaitingtogetin. Wedidn’thavetowaitverylongbecausethelinemoved{{U}}?57 ?{{/U}}quickly.??TheWhiteHouseisreallywhite.Itis paintedeveryyear.Anditseemsverywhitebecauseit’sgotbeautifullawns allaroundit{{U}}?58?{{/U}}manytreesandshrubs.Thegrounds {{U}}?59?{{/U}}aboutfoursquareblocks.Imeanthey’reabouttwo blockslong{{U}}?60?{{/U}}eachside.Thepart{{U}}?61 ?{{/U}}thePresidentlivesandworksisnotopentothepublic.Butthepart wesawwasbeautiful.Wewentthroughfiveofthemainrooms.Oneofthemwas thelibraryonthegroundfloor.Onthenextfloortherearethreeroomsnamed {{U}}?62?{{/U}}thecolorsthatare.usedinthem:theRedRoomthe BlueRoomandtheGreenRoom.??Thewallsarecoveredwithsilk {{U}}?63?{{/U}}.Thereare{{U}}?64?{{/U}}oldfurniturefrom thetime{{U}}?65?{{/U}}theWhiteHousewasfirstbuilt.And everywheretherearepaintingsandstatuesofformerpresidentsandotherfamous peoplefromhistory.
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