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考研英語沖刺范文
導讀:我根據大家的需要整理了一份關于《考研英語沖刺范文》的內容,
具體內容:我們從小學的時候起,似乎就已經學會套用寫作模板來進行英
語寫作了,不一定限定在考研才那么做。下面是我給大家整理的,供大家
參閱!:SleepSleetispartof...
我們從小學的時候起,似乎就已經學會套用寫作模板來進行英語寫作
了,不一定限定在考研才那么做。下面是我給大家整理的,供大家參閱!
:Sleep
Sleetispartofapersonsdailyactivitycycle.Thereareseveral
differentstagesofsleep,andtheytoooccurincycles.Ifyouare
anaveragesleeper,yoursleepcycleisasfollows.Whenyoufist
driftoffintoslumber,youreyeswillrollaboutabit,you
temperaturewilldropslightly,yourmuscleswillrelax,andyour
breathingwellslowandbecomequiteregular.Yourbrainwavesslow
andbecomequiteregular.Yourbrainwavesslowdownabittoo,with
thealpharhythmofratherfastwaves1sleep.Forthenexthalf
hourorso,asyourelaxmoreandmore,youwilldriftdownthrough
stage2andstage3sleep.Theloweryourstageofsleep,slower
yourbrainwaveswillbe.Thenabout40to69minutesafteryoulose
consciousnessyouwillhavereachedthedeepestsleepofall.Your
brainwillshowthelargeslowwavesthatareknownasthedelta
rhythm.Thisisstage4sleep.
Youdonotremainatthisdeepfourthstageallnightlong,but
insteadabout80minutesafteryoufallintoslumber,yourbrain
activitylevelwillincreaseagainslightly.Thedeltarhythmwill
disappear,tobereplacedbytheactivitypatternofbrainwaves.
Youreyeswillbegintodartaroundunderyourclosedeyelidsas
ifyouwerelookingatsomethingoccurringinfrontofyou.This
periodofrapideyemovementlastsforsome8to15minutesandis
calledREMsleep.ItisduringREMsleepperiod,yourbodywillsoon
relaxagain,yourbreathingwillslipgentlybackfromstage1to
stage4sleep----onlytoriseonceagaintothesurfaceofnear
consciousnesssome80minuteslater.
:Bacteria
Bacteriaareextremelysmalllivingthings.Whilewemeasureour
ownsizesininchesorcentimeters,bacterialsizeismeasuredin
microns.Onemicronisathousandthofamillimeter:apinheadis
aboutamillimeteracross.Rod-shapedbacteriaareusuallyfromtwo
tofourmicronslong,whileroundedonesaregenerallyonemicron
indiameter.Thusifyouenlargedaroundedbacteriumathousand
times,itwouldbejustaboutthesizeofapinhead.Anadulthuman
magnifiedbythesameamountwouldbeoveramile(1.6kilometer)
tall.
Evenwithanordinarymicroscope,youmustlookcloselytosee
bacteria.Usingamagnificationof100times,onefindsthat
bacteriaarebarelyvisibleastinyrodsordots.Onecannotmake
outanythingoftheirstructure.Usingspecialstains,onecansee
thatsomebacteriahaveattachedtothemwavy-looking"hairs"called
flagella.Othershaveonlyoneflagellum.Theflagellarotate,
pushingthebacteriathroughthewater.Manybacterialackflagella
andcannotmoveaboutbytheirownpower,whileotherscanglide
alongoversurfacesbysomelittle-understoodmechanism.
Fromthebacteriapointofview,theworldisaverydifferent
placefromwhatitistohumans.Toabacteriumwaterisasthick
asmolassesistous.Bacteriaaresosmallthattheyareinfluenced
bythemovementsofthechemicalmoleculesaroundthem.Bacteria
underthemicroscope,eventhosewithnoflagella,oftenbounce
aboutinthewater.Thisisbecausetheycollidewiththewatery
moleculesandarepushedthiswayandthat.Moleculesmovesorapidly
thatwithinatenthofasecondthemoleculesaroundabacteriahave
allbeenreplacedbynewones;evenbacteriawithoutflagellaare
thusconstantlyexposedtoachangingenvironment.
:TwoAttitudesTowardPart-timeJobs
Somepeolpethinktherearemoreadvantagesforcollegesstudents
totakepart-timejobsthandisadvantages,othersdontthinkso.
Whatsyourviewonthis?Andtellwhy.
Aseriousproblemhasariseninrecentseveralyearsthatmore
andmorecollegestudentsabandonstudybecauseoftheirtaking
part-timejobs,soquiteafewpeopleareopposedtopart-timejobs.
However,takingpart-timejobshasatleastthreebenefitsfor
collegestudensinmyeyes.
First,studentscanpromotetheirstudythroughpart-timejobs.
Forinstance,Ifalawstudentfindsapart-timejobinalawfirm,
hispracticewillenablehimtobetterunderstandwhatheslearned
frombooks.Whatsmore,thepart-timejobcanofferhim
opportunitiestogobeyondwhathesbeentaughtinclass,andhell
learnsomethingthatdoesntexistinbooksbutinpractice.
Second,studentscanalsoaccumulateworkexperiencesthrough
part-timejobs,whichwillbenefittheirfuturejob-hunting.
Actually,part-timejobsactaswarm-upexercisesforstudentsto
takefull-timejobsaftertheygraduate,andhelpthempreparefor
theirfuturecareers.Inaddition,asfreshbloodinthesociety,
graduatedstudentsareoftenunfavoredinjob-huntingmarketsfor
lackofpracticalworkexperiences.Itseasiertofindjobsforthose
whohaveaccumulatedexperiencesinpart-timejobs.
Lastbutnottheleast,part-timejobscanpartlyrelievestudents
financialburden,especiallythosewhoarefrompoorfamilies.
Collegetutionfeeshavegreatlyincreasedinthepasttenyears
duetotheneweducationalpolicy.Manystudentsfrompoorfamilies
cannotaffordcollegefees,andourbanksystemfailtoloancollege
studentsaseffectivelyasitdoesindevelopedcountries,sotaking
part-timejobsbecomesawayforthemtomeettheirgreatexpenses
incampuslives.
Itsanundeniedfactthatstudentsbreakthebalancebetweentheir
jobsandstudies,especiallywhentheyfallintoconflictwitheach
other.ButIthinkstudentsshouldspendtheirsparetimetaking
part-timejobs.Onlyfollowingthisprinciplecantheybenefitfrom
theirpart-timejobs.
:CellsandTemperature
Cellscannotremainaliveoutsidecertainlimitsoftemperature
andmuchnarrowerlimitsmarktheboundariesofeffective
functioning.Enzymesystemsofmammalsandbirdsaremostefficient
onlywithinanarrowrangearound37C;adepartureofafewdegrees
fromthisvalueseriouslyimpairstheirfunctioning.Eventhough
cellscansurvivewiderfluctuationstheintegratedactionsof
bodilysystemsareimpaired.Otheranimalshaveawidertolerance
forchangesofbodilytemperature.
Forcenturiesithasbeenrecognizedthatmammalsandbirdsdiffer
fromotheranimalsinthewaytheyregulatebodytemperature.Ways
ofcharacterizingthedifferencehavebecomemoreaccurateand
meaningfulovertime,butpopularterminologystillreflectsthe
olddivisioninto"warm-blooded"and"cold-blooded"species;
warm-bloodedincludedmammalsandbirdswhereasallothercreatures
wereconsideredcold-blooded.Asmorespecieswerestudied,it
becameevidentthatthisclassificationwasinadequate.Afence
lizardoradesertiguana-eachcold-blooded---usuallyhasabody
temperatureonlyadegreeortwobelowthatofhumansandsoisnot
cold.Thereforethenextdistinctionwasmadebetweenanimalsthat
maintainaconstantbodytemperature,calledhomeOtherms,andthose
whosebodytemperaturevarieswiththeirenvironments,called
poikilotherms.Butthisclassificationalsoprovedinadequate,
becauseamongmammalstherearemanythatvarytheirbody,
temperaturesduringhibernation.Furthermore,manyinvertebrates
thatliveinthedepthsoftheoceanneverexperiencechangeinthe
depthsoftheoceanneverexperiencechangeinthechillofthedeep
water,andtheirbodytemperaturesremainconstant.
:一生的事業
Asfoodistothebody,soislearningtothemind.Ourbodies
growandmusclesdevelopwiththeintakeofadequatenutritiousfood.
Likewise,weshouldkeeplearningdaybydaytomaintainourkeen
mentalpowerandexpandourintellectualcapacity.Constant
learningsuppliesuswithinexhaustiblefuelfordrivingusto
sharpenourpowerofreasoning,analysis,andjudgment.Learning
incessantlyisthesurestwaytokeeppacewiththetimesinthe
informationage,andaninfalliblewarrantofsuccessintimesof
uncertainty.
Oncelearningstops,vegetationsetsin.Itisacommonfallacy
toregardschoolastheonlyworkshopfortheacquisitionof
knowledge.Onthecontrary,learningshouldbeanever-ending
process,fromthe
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