考研相關(guān)英語(yǔ)作文

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面是我給大家整理的，供大家參閱！：恐龍化石有疑問(wèn)生物學(xué)家考羽毛進(jìn)

化過(guò)程Abeautifullypreserv...

考研究生，拿到更高的學(xué)歷，從事的工作范圍會(huì)擴(kuò)大一點(diǎn)。下面是我給

大家整理的，供大家參閱！

：恐龍化石有疑問(wèn)生物學(xué)家考羽毛進(jìn)化過(guò)程

AbeautifullypreservedfossilfromsouthernGermanyraises

questionsabouthowfeathersevolvedfromdinosaurstobirds,two

paleontologistsargueinastudypublishedThursday.

The150million-year-oldfossilisajuvenilecarnivorous

dinosaurabout21/2feetlongthatscientistsnamedJuravenator,

fortheJuramountainswhereitwasfound.

Itwouldhavelookedsimilarinlifetothefleet-footedpredators

thatmenacedayounggirlonthebeachduringtheopeningsceneof

“TheLostWorld,“thesecondJurassicParkmovie.

Thefossilsexceptionallywell-preservedbonestructureclearly

putsitamongfeatheredkinonthedinosaurfamilytree.Because

allofitscloserelativesarefeathered,paleontologistswould

expectJuravenatortofollowsuit.

Butasmallpatchofskinonthecreaturestailshowsnosignof

feathers.Andtheskinalsodoesnthavethefolliclesthatare

typicaloffeathereddinosaurs,saidLuisChiappe,directorofthe

DinosaurInstituteattheNaturalHistoryMuseumofLosAngeles

County.UeandUrsulaB.GohlichoftheUniversityofMunichdescribe

thefossilinThursdaysissueofthejournalNature.

“Ithasatypicalscalydinosaurianskin,“Chiappesaid.

ThepaleontologistsbelieveJuravenatorsclosestknownrelative

mayhavebeenafullyfeathereddinosaurfromChina,

Sinosauropterix.

ThereareanumberofpossibleexplanationsforJuravenators

nakedness.Featherscouldhavebeenlostontheevolutionaryline

leadingtoJuravenatorafterarisinginanancestortobothitand

itsfeatheredrelatives.Orfeatherscouldhaveevolvedmorethan

onceindinosaurs,croppingupinsisterspeciesatdifferenttimes

andplaces.Itisalsopossiblethatthisparticularfossilof

Juravenator,whichappearstobeajuvenile,onlygrewfeathersas

anadultorlostitsfeathersforpartoftheyear.

Butthereisanotherpossibilityaswell,saidMarkNorell,

curatorofpaleontologyattheAmericanMuseumofNaturalHistory:

ItisentirelypossiblethatJuravenatordidhavefeathers,butthey

simplyfailedtofossilize.

“Feathersarereallyjustdifficultthingstopreserve,z/Norell

said.

Tosupporthishypothesishepointedoutthatseveralfossilsof

theoldestknownbird,archaeopteryx,lackfeathers.

Whetherornotthenewspecimenraisesinterestingquestionsabout

howfeathers—andthusbirds—evolved,mostexpertsdonotsee

itasachallengetothewidelyacceptedviewthatmodernbirdsare

descendedfromdinosaurs.

：老師改變了男孩的人生

Steve,atwelve-year-oldboywithalcoholicparents,wasabout

tobelostforever,bytheU.S.educationsystem.Remarkably,he

couldread,yet,inspiteofhisreadingskills,Stevewasfailing.

Hehadbeenfailingsincefirstgrade,ashewaspassedonfromgrade

tograde.Stevewasabigboy,lookingmorelikeateenagerthan

atwelveyearold,yet,Stevewentunnoticed...untilMissWhite.

MissWhitewasasmiling,young,beautifulredhead,andStevewas

inlove!Forthefirsttimeinhisyounglife,hecouldnttakehis

eyesoffhisteacher;yet,stillhefailed.Heneverdidhishomework,

andhewasalwaysintroublewithMissWhite.Hisheartwouldbreak

underhersharpwords,andwhenhewaspunishedforfailingtoturn

inhishomework,hefeltjustmiserable!Still,hedidnotstudy.

Inthemiddleofthefirstsemesterofschool,theentireseventh

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andcontinuedtodreamofotherthings,asthedayworeon.Hisheart

wasnotinschool,butinthewoods,whereheoftenescapedalone,

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Oneday,MissWhitesimpatientvoicebrokeintohisdaydreams.

“Steve!!”Startled,heturnedtolookather.

“Payattention!

StevelockedhisgazeonMissWhitewithadolescentadoration,

asshebegantogooverthetestresultsfortheseventhgrade.

“Youalldidprettywell,“shetoldtheclass,“exceptforone

boy,anditbreaksmyhearttotellyouthis,but…"Shehesitated,

pinningStevetohisseatwithasharpstare,hereyessearching

hisface.

“…Thesmartestboyintheseventhgradeisfailingmyclass!”

ShejuststaredatSteve,astheclassspunaroundforagoodlook.

Stevedroppedhiseyesandcarefullyexaminedhisfingertips.

Afterthat,itwaswar!!Stevestillwouldntdohishomework.Even

asthepunishmentsbecamemoresevere,heremainedstubborn.

“Justtryit!ONEWEEK!”Hewasunmoved.

“Youresmartenough!Youllseeachange!Nothingfazedhim.

“Giveyourselfachance!Dontgiveuponyourlife!”Nothing.

“Steve!Please!Icareaboutyou!”

Wow!Suddenly,Stevegotit!!Someonecaredabouthim?Someone,

totallyunattainableandperfect,CAREDABOUTHIM!!

Stevewenthomefromschool,thoughtful,thatafternoon.Walking

intothehouse,hetookonelookaround.Bothparentswerepassed

out,invariousstagesofundress,andthestenchwasoverpowering!

He,quickly,gathereduphiscampinggear,ajarofpeanutbutter,

aloafofbread,abottleofwater,andthistime...hisschoolbooks.

Grimfacedanddetermined,heheadedforthewoods.

：OnKeepingaDiaryinEnglish

KeepingadiaryinEnglishisoneoftheeffectivewaystoimprove

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InkeepingadiaryinEnglish,weinevitablyrunupagainstalot

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