考研英语冲刺作文.pdf
考研英语冲刺作文
导读：我根据大家的需要整理了一份关于《考研英语冲刺作文》的内容，
具内容：英语考试不管是不是考研，到了即将冲刺的时候，总是有那么
几篇英语作文是我们要掌握的。下面是我给大家整理的，供大家参阅！：
Coal-firedpowerplantsTh...
英语考试不管是不是考研，到了即将冲刺的时候，总是有那么几篇英语
作文是我们要掌握的。下面是我给大家整理的，供大家参阅！
：Coal-firedpowerplants
TheinventionoftheincandescentlightbulbbyThomasA.Edison
in187createdademandforacheap,readilyavailablefuelwith
whichtogeneratelargeamountsofelectricpower.Coalseemedto
fitthebill,anditfueledtheearliestpowerstations,(whichwere
setupattheendofthenineteenthcenturybyEdisonhimself).As
morepowerplantswereconstructedthroughoutthecountry,the
relianceoncoalincreasedthroughoutthecountry,therelianceon
coalincreased.SincetheFirstWorldWar,coal-firedpowerplants
hadacombinedintheUnitedStateseachyear.In186suchplants
hadacombinedgeneratingcapacityof28,000megawattsandconsumed
83percentofthenearly00milliontonsofcoalminedinthecountry
thatyear.Giventheuncertaintyinthefuturegrowthofthenearly
00milliontonsofcoalminedinthecountrythatyear.Giventhe
uncertaintyinthefuturegrowthofnuclearpowerandinthesupply
ofoilandnaturalgas,coal-firedpowerplantscouldwellprovide
upto70percentoftheelectricpowerintheUnitedStatesbythe
endofthecentury.
Yet,inspiteofthefactthatcoalhaslongbeenasourceof
electricityandmayremainonformanyyears(coalrepresentsabout
80percentofUnitedStatesfossil-fuelreserves,ithasactually
neverbeenthemostdesirablefossilfuelforpowerplants.Coal
containslessenergyperunitofweightthanweightthannatural
gasoroil;itisdifficulttotransport,anditisassociatedwith
ahostofenvironmentalissues,amongthemacidrain.Sincethelate
1960sproblemsofemissioncontroland