考博英语阅读理解若干篇篇章与问题2

6.Animaloryofteninvolvesanimaginarymodelthathelpsscientistspicturethewayanobservedeventcouldbeproduced.Agoodexampleofthisisfoundinthekineticmoleculartheory，inwhichgasesarepicturedasbeingmadeupofmanysmallparticlesthatareinconstantmotion.Ausefultheory，inadditiontoexplainingpastobservations，helpstopredicteventsthathavenotasyetbeenobserved.Afteratheoryhasbeenpublicized，scientistsdesignexperiported.Ifobservationsdonotconfirmthepredictions，thescientistsmustsearchfurther.Theremaybeafaultintheexperiment，orthetheorymayhavetoberevisedorrejected.Scienceinvolvesimaginationandcreativethinkingaswellascollectinginformationandperformingexperiments.Factsbythemselvesarenotscience.AsthemathematicianJulesHenriPoincaresaid:"Scienceisbuiltwithfactsjustasahouseisbuiltwithbricks，butacollectionoffactscannotbecalledscienceanymorethanapileofbrickscanbecalledahouse."

发布者：ws2012

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