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1、1996ManpowerInc.,with560000workers,istheworld，slargesttemporaryemploymentagency.Everymorning,itspeopleswarmintotheofficesandfactoriesofAmerica,seekingaday'sworkforaday'spay.Onedayatatime.AsindustrialgiantslikeGeneralMotorsandIBMstruggletosurvivebyreducingthenumberofemployees,Manpower,
2、basedinMilwaukee,Wisconsin,isbooming.Eventhoughitseconomycontinuestorecover,theUSisincreasinglybecominganationofpart-timersandtemporaryworkers.This"disposable"workforceisthemostimportanttrendinAmericanbusinesstoday,and让isfundamentallychangingtherelationshipbetweenpeopleandtheirjobs・Th
3、ephenomenonprovidesawayforcompaniestoremaingloballycompetitivewhileavoidingmarketcyclesandthegrowingburdensimposedbyemploymentrules,healthcarecostsandpensionplans.Forworkersitcanmeananendtothesecurity,benefitsandsenseofimportancethatcamefrombeingaloyalemployee・1997Vitaminsareorganicco
4、mpoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,includingman.Theydonotprovideenergy,nordotheyconstructorbuildanypartofthebody.Theyarcneededfortransfonningfoodsintoenergyandbodymaintenance・Therearethirteenormoreofthem,andifanyismissingadeficiencyd
5、iseasebecomesapparent・Vitaminsaresimilarbecausetheyaremadeofthesameelements—usuallycarbon,hydrogen,oxygen,andsometimesnitrogen.Theyaredifferentinthattheirelementsarearrangeddifferently,andeachvitaminperformsoneormorespecificfunctionsinthebody.Gettingenoughvitaminsisessentialtolife,alt
6、houghthebodyhasnonutritionaluseforexcessvitamins.Manypeople,nevertheless,believeinbeingonthe"safeside"andthustakeextravitamins.However,awellbalanceddietwillusuallymeetallthebody'svitaminneeds.1998Untilrecent_admitted_ymosthistoriansspokeverycriticallyoftheIndustrialRevolution.They1tha
7、tinthelongrunindustrializationgreatlyraisedthestandardoflivingfortheaverage_man.Buttheyinsistedthatits_immediate_resultsduringtheperiodfrom1750to1850werewidespreadpovertyandmiseryforthe_bulk_oftheEnglishpopulation._Bycontrast,theysawintheprecedinghundredyearsfrom1650to1750,whenEngland
8、wasst
