考研英语优秀文章.pdf

考研英语优秀文章

导读：我根据大家的需要整理了一份关于《考研英语优秀文章》的内容，

具内容：考研究生是本科毕业大学生，学业更上一层的一个方式。下面

是我给大家整理的，供大家参阅！：科学理论inscience,atheoryisa

reasonable…

考研究生是本科毕业大学生，学业更上一层的一个方式。下面是我给大

家整理的，供大家参阅！

：科学理论

inscience,atheoryisareasonableexplanationofobserved

eventsthatarerelated,atheoryofteninvolvesanimaginarymodel

thathelpsscientistspicturethewayanobservedeventcouldbe

produced,agoodexampleofthisisfoundinthekineticmolecular

theory,inwhichgasesarepicturedasbeingmadeupofmanysmall

particlesthatareinconstantmotion.

ausefultheory,inadditiontoexplainingpastobservations,

helpstopredicteventsthathavenotasyetbeenobserved,after

atheoryhasbeenpublicized,scientistsdesignexperimentstotest

thetheory,ifobservationsconfirmthescientistspredictions,the

theoryissupported,ifobservationsdonotconfirmthepredictions,

thescientistsmustsearchfurther,theremaybeafaultinthe

experiment,orthetheorymayhavetoberevisedorrejected.

scienceinvolvesimaginationandcreativethinkingaswellas

collectinginformationandperformingexperiments,factsby

themselvesarenotscience,asthemathematicianjuleshenri

poincaresaid,“scienceisbuiltwithfactsjustasahouseisbuilt

withbricks,butacollectionoffactscannotbecalledscienceany

morethanapileofbrickscanbecalledahouse.”

mostscientistsstartaninvestigationbyfindingoutwhatother

scientistshavelearnedaboutaparticularproblem,afterknown

factshavebeengathered,thescientistcomestothepartofthe

investigationthatrequiresconsiderableimagination,possible

solutionstotheproblemareformulated,thesepossiblesolutions

arecalledhypotheses.

Changingrolesofpubliceducation

Oneofthemostimportantsocialdevelopmentsthathelpedto