• 2021-04-14 问题

    WhenDarwinsaid"survivalofthefittest",hemeantwhichsenseoftheword"fittest"?

    WhenDarwinsaid"survivalofthefittest",hemeantwhichsenseoftheword"fittest"?

  • 2022-06-12 问题

    TheRomanticwriterswouldfocusonallthefollowingissues ______inthe Americanhistory. A: individualfeeling B: survivalofthefittest C: strongimagination D: eturntonature

    TheRomanticwriterswouldfocusonallthefollowingissues ______inthe Americanhistory. A: individualfeeling B: survivalofthefittest C: strongimagination D: eturntonature

  • 2022-06-12 问题

    TheRomanticwriterswouldfocusonallthefollowingissuesexceptthe inthe Americanhistory. A: individualfeeling B: survivalofthefittest C: strongimagination D: eturntonature

    TheRomanticwriterswouldfocusonallthefollowingissuesexceptthe inthe Americanhistory. A: individualfeeling B: survivalofthefittest C: strongimagination D: eturntonature

  • 2022-05-27 问题

    Passage9<br/><spanstyle="display:block;text-align:center;">EvolutionoftheShark</span>Theshark,whateverelseitmightbe,isalmostuniquelysuccessful.Accordingtofossilevidence,theearliestshark-likecreaturesprowledtheworld’soceans450millionyearsago—longbeforetheageofdinosaurs.Comparedtothis,man’sspanofacoupleofmillionyearsisamereflashofatigershark’stail.<br/>Evolutionisthegrindinglyslowprocesswhichrewardssuccessby“survivalofthefittest”.Organismsbestsuitedtoexploittheirenvironmentsurvivetobreed,producingmorelikethemselves.Thoselesssuitedtotheirsurroundingsfailtoprosperandsimplydieout.Ifanenvironmentchanges,whichmaymeanchangesinpredators*orfoodsupply,aswellasphysicalsurroundings,aspeciesmayneedtoadaptifitistosurvive.<br/>Whathappensinpracticeisthatoneormoreofthemyriadtinydifferencesthatoccurnaturallyinapopulationbecomeanadvantageordisadvantage.Ifthecharacteristicisanasset,thecreaturepossessingitismorelikelytosurviveandpassitontothenextgeneration.Ifitisnot,theindividual,andthecharacteristic,aremorelikelytodieout.Humans,forinstance,althoughallpartofthesamespecies,comeinmanyshapesandsizes.Althoughmodemman’scapacitytochangehisenvironmenthasreducedhisneedtoadapttoit,someofthesecouldbecomemoreorlessadvantageousifoursurroundingsweretochange.<br/>Althoughtheshark’senvironment,thesea,hasprobablybeenmoreconstantthantheone-thirdoftheglobethatisland,sharks,too,haveundergoneinnumerablechangesoverthemillennia.AsNatureexperimentedtofindherperfectfish,thereweremanysuccessesbutprobablymanymoredeadends.Someofthesearepreservedinlayersofancientrock,the“fossilrecord”,fromwherepaleontologists**laterunearththem.<br/>*predator:捕食其他动物为生的动物<br/>**paleontologist:古动物学家<br/><spanstyle="display:block;text-align:right;">(2005年5月试题)</span>

    Passage9<br/><spanstyle="display:block;text-align:center;">EvolutionoftheShark</span>Theshark,whateverelseitmightbe,isalmostuniquelysuccessful.Accordingtofossilevidence,theearliestshark-likecreaturesprowledtheworld’soceans450millionyearsago—longbeforetheageofdinosaurs.Comparedtothis,man’sspanofacoupleofmillionyearsisamereflashofatigershark’stail.<br/>Evolutionisthegrindinglyslowprocesswhichrewardssuccessby“survivalofthefittest”.Organismsbestsuitedtoexploittheirenvironmentsurvivetobreed,producingmorelikethemselves.Thoselesssuitedtotheirsurroundingsfailtoprosperandsimplydieout.Ifanenvironmentchanges,whichmaymeanchangesinpredators*orfoodsupply,aswellasphysicalsurroundings,aspeciesmayneedtoadaptifitistosurvive.<br/>Whathappensinpracticeisthatoneormoreofthemyriadtinydifferencesthatoccurnaturallyinapopulationbecomeanadvantageordisadvantage.Ifthecharacteristicisanasset,thecreaturepossessingitismorelikelytosurviveandpassitontothenextgeneration.Ifitisnot,theindividual,andthecharacteristic,aremorelikelytodieout.Humans,forinstance,althoughallpartofthesamespecies,comeinmanyshapesandsizes.Althoughmodemman’scapacitytochangehisenvironmenthasreducedhisneedtoadapttoit,someofthesecouldbecomemoreorlessadvantageousifoursurroundingsweretochange.<br/>Althoughtheshark’senvironment,thesea,hasprobablybeenmoreconstantthantheone-thirdoftheglobethatisland,sharks,too,haveundergoneinnumerablechangesoverthemillennia.AsNatureexperimentedtofindherperfectfish,thereweremanysuccessesbutprobablymanymoredeadends.Someofthesearepreservedinlayersofancientrock,the“fossilrecord”,fromwherepaleontologists**laterunearththem.<br/>*predator:捕食其他动物为生的动物<br/>**paleontologist:古动物学家<br/><spanstyle="display:block;text-align:right;">(2005年5月试题)</span>

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