英语六级考前冲刺练习题2017年英语六级考前冲刺练习题Mostofthetroubleintheworldiscausedbypeoplewantingtobeimportant.以下是小编为大家搜索整理的2017年英语六级考前冲刺练习题，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!Itisacuriousparadoxthatwethinkofthephysicalsciencesas“hard”,thesocialsciencesas“soft,”andthebiologicalsciencesassomewhereinbetween.Thisisinterpretedtomeanthatourknowledgeofphysicalsystemismorecertainthanourknowledgeofbiologicalsystems,andtheseinturnaremorecertainthanourknowledgeofsocialsystems.Intermsofourcapacityofsampletherelevantuniverses,however,andtheprobabilitythatourimagesoftheseuniversesareatleastapproximatelycorrect,onesuspectsthatareverseorderismorereasonable.Weareabletosampleearth’ssocialsystemswithsomedegreeofconfidencethatwehaveareasonablesampleofthetotaluniversebeinginvestigated.Ourknowledgeofsocialsystems,therefore,whileitisinmanywaysextremelyinaccurate,isnotlikelytobeseriouslyoverturnedbynewdiscoveries.Eventhefolkknowledgeinsocialsystemsonwhichordinarylifeisbasedinearning,spending,organizing,marrying,takingpartinpoliticalactivities,fightingandsoon,isnotverydissimilarfromthemoresophisticatedimagesofthesocialsystemderivedformthesocialsciences,eventhoughitisbuiltupontheveryimperfectsamplesofpersonalexperience.Incontrast,ourimageoftheastronomicaluniverse,orevenifearth’sgeologicalhistory,caeasilybesubjecttorevolutionarychangesasnewdatacomeinandnewtheoriesareworkedout.Ifwedefinethe“security”ofourimageofvariouspartsofthetotalsystemastheprobabilityoftheirsufferingsignificantchanges,thenwewouldreversetheorderforhardnessandasthemostsecure,thephysicalsciencesastheleastsecure,andagainthebiologicalsciencesassomewhereinbetween.Ourimageoftheastronomicaluniverseistheleastsecureofallsimplybecauseweobservesuchafantasticallysmallsampleofitanditsrecord-keepingistrivialrecordsofbiologicalsystems.Recordsoftheastronomicaluniverse,despitethefactthatwelearntthingsastheywerelongage,arelimitedintheextreme.Eveninregardtosuchacloseneighborasthemoon,whichwehaveactuallyvisited,