Ahandfulofpeoplecanrecallalmosteverydayoftheirlivesinenormousdetail一andafteryearsofresearch，neuroscientistsarefinallybeginningtounderstandhowtheydoit.A)Formostofus,memoryisamessofblurredandfadedpicturesofourlives.Asmuchaswewouldliketoclingontoourpast,eventhesaddestmomentscanbewashedawaywithtime.B)AskNimaVeisehwhathewasdoingforanydayinthepast15years,however,andhewillgiveyouthedetailsoftheweather,whathewaswearing,orevenwhatsideofthetrainhewassittingonhisjourneytowork.'Mymemoryislikealibraryofvideotapes,walk-throughsofeverydayofmylifefromwakingtosleeping,'heexplains.C)Veisehcanevenputadateonwhenthosetapesstartedrecording:15December2000,whenhemethisfirstgirlfriendathisbestfriend's16thbirthdayparty.Hehadalwayshadagoodmemory,butthethrillofyoungloveseemstohaveshiftedagearinhismind:fromnowon,hewouldstartrecordinghiswholelifeindetail.'Icouldtellyoueverythingabouteverydayafterthat.'D)Needlesstosay,peoplelikeVeisehareofgreatinteresttoneuroscientists（神经科学专家）hopingtounderstandthewaythebrainrecordsourlives.Acoupleofrecentpapershavefinallyopenedawindowonthesepeople'sextraordinaryminds.Andsuchresearchmightevensuggestwaysforusalltoreliveourpastwithgreaterclarity.E)'Highlysuperiorautobiographicalmemory'(orHSAMforshort),firstcametolightintheearly2000s,withayoungwomannamedJillPrice.EmailingtheneuroscientistandmemoryresearcherJimMcGaughoneday,sheclaimedthatshecouldrecalleverydayofherlifesincetheageof12.Couldhehelpexplainherexperiences?F)McGaughinvitedhertohislab,andbegantotesther:hewouldgiveheradateandaskhertotellhimabouttheworldeventsonthatday.Truetoherword,shewascorrectalmosteverytime.G)Itdidn'ttakelongformagazinesanddocumentaryfilm-makerstocometounderstandher'totalrecall',andthankstothesubsequentmediainterest,afewdozenothersubjects(includingVeiseh)havesincecomeforwardandcontactedtheteamattheUniversityofCalifornia,Irvine.H)Interestingly,theirmemoriesarehighlyself-centred:althoughtheycanremember'autobiographical'lifeeventsinextraordinarydetail,theyseemtobenobetterthanaverageatrecallingimpersonalinformation,suchasrandom（任意选取的）listsofwords.Noraretheynecessarilybetteratrememberingaroundofdrinks,say.Andalthoughtheirmemoriesarevast,theyarestilllikelytosufferfrom'falsememories'.Clearly,thereisnosuchthingasa'perfect'memory—theirextraordinarymindsarestillusingthesameflawedtoolsthattherestofusrelyon.Thequestionis,how?I)LawrencePatihisattheUniversityofSouthernMississippirecentlystudiedaround20peoplewithHSAMandfoundthattheyscoredparticularlyhighontwomeasures:fantasyproneness(倾向）andabsorption.Fantasypronenesscouldbeconsideredatendencytoimagineanddaydream,whereasabsorptionisthetendencytoallowyourmindtobecomefullyabsorbedinanactivity—topaycompleteattentiontothesensations(感受）andtheexperiences.'I'mextremelysensitivetosounds,smellsandvisualdetail,'explainsNicoleDonohue,whohastakenpartinmanyofthesestudies.'Idefinitelyfeelthingsmorestronglythantheaverageperson.'J)Theabsorptionhelpsthemtoestablishstrongfoundationsforrecollection,saysPatihis,andthefantasypronenessmeansthattheyrevisitthosememoriesagainandagaininthecomingweeksandmonths.Eachtimethisinitialmemorytraceis'replayed',itbecomesevenstronger.Insomeways,youprobablygothroughthatprocessafterabigeventlikeyourweddingday—butthedifferenceisthatthankstotheirotherpsychologicaltendencies,theHSAMsubjectsaredoingitdayin,dayout,forthewholeoftheirlives.K)NoteveryonewithatendencytofantasisewilldevelopHSAM,though,soPatihissuggeststhatsomethingmusthavecausedthemtothinksomuchabouttheirpast.'Maybesomeexperienceintheirchildhoodmeantthattheybecameobsessed(着迷）withcalendarsandwhathappenedtothem,'saysPatihis.L)ThepeoplewithHSAMI'veinterviewedwouldcertainlyagreethatitcanbeamixedblessing.Ontheplusside,itallowsyoutorelivethemosttransformativeandenrichingexperiences.Veiseh,forinstance,travelledalotinhisyouth.Inhissparetime,hevisitedthelocalartgalleries,andthepaintingsarenowlodgeddeepinhisautobiographicalmemories.M)'Imaginebeingabletoremembereverypainting,oneverywall,ineverygalleryspace,betweennearly40countries,'hesays.'That'sabigeducationinartbyitself.'Withthiscomprehensiveknowledgeofthehistoryofart,hehassincebecomeaprofessionalpainter.N)Donohue,nowahistoryteacher,agreesthatithelpedduringcertainpartsofhereducation:'IcandefinitelyrememberwhatIlearnedoncertaindaysatschool.Icouldimaginewhattheteacherwassayingorwhatitlookedlikeinthebook.'O)NoteveryonewithHSAMhasexperiencedthesebenefits，however.Viewingthepastinhighdefinitioncanmakeitverydifficulttogetoverpainandregret.'Itcanbeveryhardtoforgetembarrassingmoments,'saysDonohue.'Youfeelthesameemotions—itisjustasraw,justasfresh...Youcan'tturnoffthatstreamofmemories,nomatterhowhardyoutry.'Veisehagrees:'Itislikehavingtheseopenwounds—theyarejustapartofyou,'hesays.P)Thismeanstheyoftenhavetomakeaspecialefforttolaythepasttorest.Bill,forinstance,oftengetspainful'flashbacks',inwhichunwantedmemoriesintrudeintohisconsciousness,butoverallhehaschosentoseeitasthebestwayofavoidingrepeatingthesamemistakes.'Somepeopleareabsorbedinthepastbutnotopentonewmemories,butthat'snotthecaseforme.Ilookforwardtoeachdayandexperiencingsomethingnew.'36.PeoplewithHSAMhavethesamememoryasordinarypeoplewhenitcomestoimpersonalinformation.37.FantasypronenesswillnotnecessarilycausepeopletodevelopHSAM.38.Veisehbegantorememberthedetailsofhiseverydayexperiencesafterhemethisfirstyounglove.39.ManymorepeoplewithHSAMstartedtocontactresearchersduetothemassmedia.40.PeoplewithHSAMoftenhavetomakeeffortstoavoidfocusingonthepast.41.Mostpeopledonothaveclearmemoriesofpastevents.42.HSAMcanbebothacurseandablessing.43.Ayoungwomansoughtexplanationfromabrainscientistwhenshenoticedherunusualmemory.44.SomepeoplewithHSAMfinditveryhardtogetridofunpleasantmemories.45.ArecentstudyofpeoplewithHSAMrevealsthattheyareliabletofantasyandfullabsorptioninanactivity.
Ahandfulofpeoplecanrecallalmosteverydayoftheirlivesinenormousdetail一andafteryearsofresearch，neuroscientistsarefinallybeginningtounderstandhowtheydoit.A)Formostofus,memoryisamessofblurredandfadedpicturesofourlives.Asmuchaswewouldliketoclingontoourpast,eventhesaddestmomentscanbewashedawaywithtime.B)AskNimaVeisehwhathewasdoingforanydayinthepast15years,however,andhewillgiveyouthedetailsoftheweather,whathewaswearing,orevenwhatsideofthetrainhewassittingonhisjourneytowork.'Mymemoryislikealibraryofvideotapes,walk-throughsofeverydayofmylifefromwakingtosleeping,'heexplains.C)Veisehcanevenputadateonwhenthosetapesstartedrecording:15December2000,whenhemethisfirstgirlfriendathisbestfriend's16thbirthdayparty.Hehadalwayshadagoodmemory,butthethrillofyoungloveseemstohaveshiftedagearinhismind:fromnowon,hewouldstartrecordinghiswholelifeindetail.'Icouldtellyoueverythingabouteverydayafterthat.'D)Needlesstosay,peoplelikeVeisehareofgreatinteresttoneuroscientists（神经科学专家）hopingtounderstandthewaythebrainrecordsourlives.Acoupleofrecentpapershavefinallyopenedawindowonthesepeople'sextraordinaryminds.Andsuchresearchmightevensuggestwaysforusalltoreliveourpastwithgreaterclarity.E)'Highlysuperiorautobiographicalmemory'(orHSAMforshort),firstcametolightintheearly2000s,withayoungwomannamedJillPrice.EmailingtheneuroscientistandmemoryresearcherJimMcGaughoneday,sheclaimedthatshecouldrecalleverydayofherlifesincetheageof12.Couldhehelpexplainherexperiences?F)McGaughinvitedhertohislab,andbegantotesther:hewouldgiveheradateandaskhertotellhimabouttheworldeventsonthatday.Truetoherword,shewascorrectalmosteverytime.G)Itdidn'ttakelongformagazinesanddocumentaryfilm-makerstocometounderstandher'totalrecall',andthankstothesubsequentmediainterest,afewdozenothersubjects(includingVeiseh)havesincecomeforwardandcontactedtheteamattheUniversityofCalifornia,Irvine.H)Interestingly,theirmemoriesarehighlyself-centred:althoughtheycanremember'autobiographical'lifeeventsinextraordinarydetail,theyseemtobenobetterthanaverageatrecallingimpersonalinformation,suchasrandom（任意选取的）listsofwords.Noraretheynecessarilybetteratrememberingaroundofdrinks,say.Andalthoughtheirmemoriesarevast,theyarestilllikelytosufferfrom'falsememories'.Clearly,thereisnosuchthingasa'perfect'memory—theirextraordinarymindsarestillusingthesameflawedtoolsthattherestofusrelyon.Thequestionis,how?I)LawrencePatihisattheUniversityofSouthernMississippirecentlystudiedaround20peoplewithHSAMandfoundthattheyscoredparticularlyhighontwomeasures:fantasyproneness(倾向）andabsorption.Fantasypronenesscouldbeconsideredatendencytoimagineanddaydream,whereasabsorptionisthetendencytoallowyourmindtobecomefullyabsorbedinanactivity—topaycompleteattentiontothesensations(感受）andtheexperiences.'I'mextremelysensitivetosounds,smellsandvisualdetail,'explainsNicoleDonohue,whohastakenpartinmanyofthesestudies.'Idefinitelyfeelthingsmorestronglythantheaverageperson.'J)Theabsorptionhelpsthemtoestablishstrongfoundationsforrecollection,saysPatihis,andthefantasypronenessmeansthattheyrevisitthosememoriesagainandagaininthecomingweeksandmonths.Eachtimethisinitialmemorytraceis'replayed',itbecomesevenstronger.Insomeways,youprobablygothroughthatprocessafterabigeventlikeyourweddingday—butthedifferenceisthatthankstotheirotherpsychologicaltendencies,theHSAMsubjectsaredoingitdayin,dayout,forthewholeoftheirlives.K)NoteveryonewithatendencytofantasisewilldevelopHSAM,though,soPatihissuggeststhatsomethingmusthavecausedthemtothinksomuchabouttheirpast.'Maybesomeexperienceintheirchildhoodmeantthattheybecameobsessed(着迷）withcalendarsandwhathappenedtothem,'saysPatihis.L)ThepeoplewithHSAMI'veinterviewedwouldcertainlyagreethatitcanbeamixedblessing.Ontheplusside,itallowsyoutorelivethemosttransformativeandenrichingexperiences.Veiseh,forinstance,travelledalotinhisyouth.Inhissparetime,hevisitedthelocalartgalleries,andthepaintingsarenowlodgeddeepinhisautobiographicalmemories.M)'Imaginebeingabletoremembereverypainting,oneverywall,ineverygalleryspace,betweennearly40countries,'hesays.'That'sabigeducationinartbyitself.'Withthiscomprehensiveknowledgeofthehistoryofart,hehassincebecomeaprofessionalpainter.N)Donohue,nowahistoryteacher,agreesthatithelpedduringcertainpartsofhereducation:'IcandefinitelyrememberwhatIlearnedoncertaindaysatschool.Icouldimaginewhattheteacherwassayingorwhatitlookedlikeinthebook.'O)NoteveryonewithHSAMhasexperiencedthesebenefits，however.Viewingthepastinhighdefinitioncanmakeitverydifficulttogetoverpainandregret.'Itcanbeveryhardtoforgetembarrassingmoments,'saysDonohue.'Youfeelthesameemotions—itisjustasraw,justasfresh...Youcan'tturnoffthatstreamofmemories,nomatterhowhardyoutry.'Veisehagrees:'Itislikehavingtheseopenwounds—theyarejustapartofyou,'hesays.P)Thismeanstheyoftenhavetomakeaspecialefforttolaythepasttorest.Bill,forinstance,oftengetspainful'flashbacks',inwhichunwantedmemoriesintrudeintohisconsciousness,butoverallhehaschosentoseeitasthebestwayofavoidingrepeatingthesamemistakes.'Somepeopleareabsorbedinthepastbutnotopentonewmemories,butthat'snotthecaseforme.Ilookforwardtoeachdayandexperiencingsomethingnew.'36.PeoplewithHSAMhavethesamememoryasordinarypeoplewhenitcomestoimpersonalinformation.37.FantasypronenesswillnotnecessarilycausepeopletodevelopHSAM.38.Veisehbegantorememberthedetailsofhiseverydayexperiencesafterhemethisfirstyounglove.39.ManymorepeoplewithHSAMstartedtocontactresearchersduetothemassmedia.40.PeoplewithHSAMoftenhavetomakeeffortstoavoidfocusingonthepast.41.Mostpeopledonothaveclearmemoriesofpastevents.42.HSAMcanbebothacurseandablessing.43.Ayoungwomansoughtexplanationfromabrainscientistwhenshenoticedherunusualmemory.44.SomepeoplewithHSAMfinditveryhardtogetridofunpleasantmemories.45.ArecentstudyofpeoplewithHSAMrevealsthattheyareliabletofantasyandfullabsorptioninanactivity.
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ＞Ⅱ＞Ⅲ＞Ⅳ B: Ⅲ＞Ⅱ＞Ⅳ＞Ⅰ C: Ⅲ＞Ⅳ＞Ⅱ＞Ⅰ D: Ⅳ＞Ⅲ＞Ⅱ＞Ⅰ
比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ＞Ⅱ＞Ⅲ＞Ⅳ B: Ⅲ＞Ⅱ＞Ⅳ＞Ⅰ C: Ⅲ＞Ⅳ＞Ⅱ＞Ⅰ D: Ⅳ＞Ⅲ＞Ⅱ＞Ⅰ
不稳定的一类化合物是: C≡C|C－C|C＝C|C＝C－C＝C|C＝C＝C
不稳定的一类化合物是: C≡C|C－C|C＝C|C＝C－C＝C|C＝C＝C
NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)
NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)
比较C≡C(I)，C=C(II)，C─C(III)，C=C─C=C(IV)的键长次序为：
比较C≡C(I)，C=C(II)，C─C(III)，C=C─C=C(IV)的键长次序为：
在同一种固体介质中，纵波、横波、表面波三者之间的声速关系为（） A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C
在同一种固体介质中，纵波、横波、表面波三者之间的声速关系为（） A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C
scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入（ ）。
scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入（ ）。
能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C
能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C