Whydosomepeoplelivetobeolderthanothers?Youknowthestandardexplanations:keepingamoderatediet,engaginginregularexercise,etc.Butwhateffectdoesyourpersonalityhaveonyourlongevity(长寿)?Dosomekindsofpersonalitiesleadtolongerlives?AnewstudyintheJournaloftheAmericanGeriatricsSocietylookedatthisquestionbyexaminingthepersonalitycharacteristicsof246childrenofpeoplewhohadlivedtobeatleast100.Thestudyshowsthatthoselivingthelongestaremoreoutgoing,moreactiveandlessneurotic(神经质的)thanotherpeople.Long-livingwomenarealsomorelikelytobesympatheticandcooperativethanwomenwithanormallifespan.Thesefindingsareinagreementwithwhatyouwouldexpectfromtheevolutionarytheory:thosewholiketomakefriendsandhelpotherscangatherenoughresourcestomakeitthroughtoughtimes.Interestingly,however,othercharacteristicsthatyoumightconsideradvantageoushadnoimpactonwhetherstudyparticipantswerelikelytolivelonger.Thosewhoweremoreself-disciplined,forinstance,werenomorelikelytolivetobeveryold.Also,beingopentonewideashadnorelationshiptolonglife,whichmightexplainallthosebad-temperedoldpeoplewhoarefixedintheirways.Whetheryoucansuccessfullychangeyourpersonalityasanadultisthesubjectofalongstandingpsychologicaldebate.Butthenewpapersuggeststhatifyouwantlonglife,youshouldstrivetobeasoutgoingaspossible.Unfortunately,anotherrecentstudyshowsthatyourmother’spersonalitymayalsohelpdetermineyourlongevity.Thatstudylookedatnearly28,000Norwegianmothersandfoundthatthosemomswhoweremoreanxious,depressedandangryweremorelikelytofeedtheirkidsunhealthydiets.Patternsofchildhoodeatingcanbehardtobreakwhenwe’readults,whichmaymeanthatkidsofdepressedmomsendupdyingyounger.Personalityisn’tdestiny(命运),andeveryoneknowsthatindividualscanlearntochange.Butbothstudiesshowthatlonglifeisn’tjustamatterofyourphysicalhealthbutofyourmentalhealth.1.TheaimofthestudyintheJournaloftheAmericanGeriatricsSocietyis________.A.toseewhetherpeople’spersonalityaffectstheirlifespanB.tofindoutifone’slifestylehasanyeffectontheirhealthC.toinvestigatetheroleofexerciseinlivingalonglifeD.toexamineallthefactorscontributingtolongevity2.Whatdoestheauthorimplyaboutoutgoingandsympatheticpeople?A.Theyhaveagoodunderstandingofevolution.B.Theyarebetteratnegotiatinganagreement.C.Theygenerallyappearmoreresourceful.D.Theyaremorelikelytogetoverhardship.3.Whatfindingofthestudymightprovesomewhatoutofourexpectation?A.Easy-goingpeoplecanalsolivearelativelylonglife.B.Personalitycharacteristicsthatproveadvantageousactuallyvarywithtimes.C.Suchpersonalitycharacteristicsasself-disciplinehavenoeffectonlongevity.D.Readinesstoacceptnewideashelpsoneenjoylongevity.4.WhatdoestherecentstudyofNorwegianmothersshow?A.Children’spersonalitycharacteristicsareinvariablydeterminedbytheirmothers.B.Peoplewithunhealthyeatinghabitsarelikelytodiesooner.C.Mothers’influenceonchildrenmaylastlongerthanfathers’.D.Mothers’negativepersonalitycharacteristicsmayaffecttheirchildren’slifespans.5.Whatcanwelearnfromthefindingsofthetwonewstudies?A.Anxietyanddepressionmoreoftenthannotcutshortone’slifespan.B.Longevityresultsfromacombinationofmentalandphysicalhealth.C.Personalityplaysadecisiveroleinhowhealthyoneis.D.Healthisinlargepartrelatedtoone’slifestyle.
Whydosomepeoplelivetobeolderthanothers?Youknowthestandardexplanations:keepingamoderatediet,engaginginregularexercise,etc.Butwhateffectdoesyourpersonalityhaveonyourlongevity(长寿)?Dosomekindsofpersonalitiesleadtolongerlives?AnewstudyintheJournaloftheAmericanGeriatricsSocietylookedatthisquestionbyexaminingthepersonalitycharacteristicsof246childrenofpeoplewhohadlivedtobeatleast100.Thestudyshowsthatthoselivingthelongestaremoreoutgoing,moreactiveandlessneurotic(神经质的)thanotherpeople.Long-livingwomenarealsomorelikelytobesympatheticandcooperativethanwomenwithanormallifespan.Thesefindingsareinagreementwithwhatyouwouldexpectfromtheevolutionarytheory:thosewholiketomakefriendsandhelpotherscangatherenoughresourcestomakeitthroughtoughtimes.Interestingly,however,othercharacteristicsthatyoumightconsideradvantageoushadnoimpactonwhetherstudyparticipantswerelikelytolivelonger.Thosewhoweremoreself-disciplined,forinstance,werenomorelikelytolivetobeveryold.Also,beingopentonewideashadnorelationshiptolonglife,whichmightexplainallthosebad-temperedoldpeoplewhoarefixedintheirways.Whetheryoucansuccessfullychangeyourpersonalityasanadultisthesubjectofalongstandingpsychologicaldebate.Butthenewpapersuggeststhatifyouwantlonglife,youshouldstrivetobeasoutgoingaspossible.Unfortunately,anotherrecentstudyshowsthatyourmother’spersonalitymayalsohelpdetermineyourlongevity.Thatstudylookedatnearly28,000Norwegianmothersandfoundthatthosemomswhoweremoreanxious,depressedandangryweremorelikelytofeedtheirkidsunhealthydiets.Patternsofchildhoodeatingcanbehardtobreakwhenwe’readults,whichmaymeanthatkidsofdepressedmomsendupdyingyounger.Personalityisn’tdestiny(命运),andeveryoneknowsthatindividualscanlearntochange.Butbothstudiesshowthatlonglifeisn’tjustamatterofyourphysicalhealthbutofyourmentalhealth.1.TheaimofthestudyintheJournaloftheAmericanGeriatricsSocietyis________.A.toseewhetherpeople’spersonalityaffectstheirlifespanB.tofindoutifone’slifestylehasanyeffectontheirhealthC.toinvestigatetheroleofexerciseinlivingalonglifeD.toexamineallthefactorscontributingtolongevity2.Whatdoestheauthorimplyaboutoutgoingandsympatheticpeople?A.Theyhaveagoodunderstandingofevolution.B.Theyarebetteratnegotiatinganagreement.C.Theygenerallyappearmoreresourceful.D.Theyaremorelikelytogetoverhardship.3.Whatfindingofthestudymightprovesomewhatoutofourexpectation?A.Easy-goingpeoplecanalsolivearelativelylonglife.B.Personalitycharacteristicsthatproveadvantageousactuallyvarywithtimes.C.Suchpersonalitycharacteristicsasself-disciplinehavenoeffectonlongevity.D.Readinesstoacceptnewideashelpsoneenjoylongevity.4.WhatdoestherecentstudyofNorwegianmothersshow?A.Children’spersonalitycharacteristicsareinvariablydeterminedbytheirmothers.B.Peoplewithunhealthyeatinghabitsarelikelytodiesooner.C.Mothers’influenceonchildrenmaylastlongerthanfathers’.D.Mothers’negativepersonalitycharacteristicsmayaffecttheirchildren’slifespans.5.Whatcanwelearnfromthefindingsofthetwonewstudies?A.Anxietyanddepressionmoreoftenthannotcutshortone’slifespan.B.Longevityresultsfromacombinationofmentalandphysicalhealth.C.Personalityplaysadecisiveroleinhowhealthyoneis.D.Healthisinlargepartrelatedtoone’slifestyle.
【单选题】NO 2 、NO 2 - 、NO 2 + 键角大小关系正确的是 。 A. NO 2 > NO 2 - >NO 2 + B. NO 2 + >NO 2 >NO 2 - C. NO 2 - > NO 2 >NO 2 + D. NO 2 + > NO 2 - >NO 2
【单选题】NO 2 、NO 2 - 、NO 2 + 键角大小关系正确的是 。 A. NO 2 > NO 2 - >NO 2 + B. NO 2 + >NO 2 >NO 2 - C. NO 2 - > NO 2 >NO 2 + D. NO 2 + > NO 2 - >NO 2
求定积分[img=179x43]17da65388c0b1ca.png[/img]； （ ） A: log(2^(1/2) + 1)/2 + 2^(1/2)/2 B: log(2^(1/2) + 1)/2 - 2^(1/2)/2 - 1/2 C: log(2^(1/2) + 1)/2 + 2^(1/2)/2 - 1/2 D: log(2^(1/2) + 1)/2 + 2^(1/2)/2 + 1/2
求定积分[img=179x43]17da65388c0b1ca.png[/img]； （ ） A: log(2^(1/2) + 1)/2 + 2^(1/2)/2 B: log(2^(1/2) + 1)/2 - 2^(1/2)/2 - 1/2 C: log(2^(1/2) + 1)/2 + 2^(1/2)/2 - 1/2 D: log(2^(1/2) + 1)/2 + 2^(1/2)/2 + 1/2
2 + 2 * (2 * 2 - 2) % 2 / 3
2 + 2 * (2 * 2 - 2) % 2 / 3
函数z=xsiny在点(1,π/4)处的两个偏导数分别为 A: √2/2,√2/2 B: √2/2,-√2/2 C: -√2/2,-√2/2 D: -√2/2,√2/2
函数z=xsiny在点(1,π/4)处的两个偏导数分别为 A: √2/2,√2/2 B: √2/2,-√2/2 C: -√2/2,-√2/2 D: -√2/2,√2/2
2×2×2×2×2
2×2×2×2×2
HbF的构成主要是（） A: α2β2 B: α2δ2 C: ζ2ε2 D: α2γ2 E: ζ2γ2
HbF的构成主要是（） A: α2β2 B: α2δ2 C: ζ2ε2 D: α2γ2 E: ζ2γ2
胎儿期血红蛋白HbF的分子组成为（ ）。 A: ζ2ε2 B: α2Aγ2、α2Gγ2 C: ζ2 Aγ2、ζ2Gγ2 D: ζ2 Aγ2、 E: α2δ2 、α2β2
胎儿期血红蛋白HbF的分子组成为（ ）。 A: ζ2ε2 B: α2Aγ2、α2Gγ2 C: ζ2 Aγ2、ζ2Gγ2 D: ζ2 Aγ2、 E: α2δ2 、α2β2
正常人血红蛋白多肽链的组成是 A: α2β2 B: α2γ2 C: α2ε2 D: α2δ2 E: σ2β2
正常人血红蛋白多肽链的组成是 A: α2β2 B: α2γ2 C: α2ε2 D: α2δ2 E: σ2β2
函数[img=79x27]180355ae2690a03.png[/img]在x=2处的二阶泰勒展开式为 A: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)+exp(sin(2))*(sin(2)/2-cos(2)^2/2)*(x-2)^2 B: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)-exp(sin(2))*(sin(2)/2-cos(2)^2/2)*(x-2)^2 C: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)-exp(sin(2))*(sin(2)/2+cos(2)^2/2)*(x-2)^2 D: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)+exp(sin(2))*(sin(2)/2+cos(2)^2/2)*(x-2)^2
函数[img=79x27]180355ae2690a03.png[/img]在x=2处的二阶泰勒展开式为 A: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)+exp(sin(2))*(sin(2)/2-cos(2)^2/2)*(x-2)^2 B: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)-exp(sin(2))*(sin(2)/2-cos(2)^2/2)*(x-2)^2 C: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)-exp(sin(2))*(sin(2)/2+cos(2)^2/2)*(x-2)^2 D: exp(sin(2))+cos(2)*exp(sin(2))*(x-2)+exp(sin(2))*(sin(2)/2+cos(2)^2/2)*(x-2)^2