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1、人教版新教材高二(上)Unit1MakingadifferenceAImaginethis:youaretwenty-oneyearsoldandapromisinggraduatestudentatoneofthetopuniversitiesintheworld.Oneday,yourdoctortellsyouthatyouhaveanincurablediseaseandmaynothavemorethantwelvemonthstolive.Howwouldyoufeel?Whatwouldyoudo?Mostofuswouldprobably
2、feelverysadandgiveupourdreamsandhopesforthefuture.HereiswhatStephenHawkingthought:(Theredidnotseem)muchpointinworkingonmyPhD—Ididnotexpecttosurvivethatlong.YettwoyearshadgonebyandIwasnotthatmuchworse.Infact,thingsweregoingratherwellformeandIhadgotengagedtoaverynicegirl,JaneWilde.
3、Butinordertogetmarried,Ineededajob,andinordertogetajob,IneededaPhD.Insteadofgivingup,Hawkingwentonwithhisresearch,gothisPhDandmarriedJane.Nordidheletthediseasestophimfromlivingthekindoflifehehadalwaysdreamtof.Hecontinuedhisexplorationoftheuniverseandtraveledaroundtheworldtogivele
4、ctures.In2002,HawkingvisitedChinaandspoketouniversitystudentsinHangzhouandBeijing.Ashisdiseasehasdisabledhim,Hawkinghastositinhisnow-famouswheelchairandspeakthroughacomputer.Hetoldthestudentsabouthistheoriesandthoughtsonsomeofthegreatestquestions:Whatistime,howdidtheuniversebegin
5、,andwhatexactlyareblackholes?Hawkingbecamefamousintheearly1970s,whenheandAmericanRogerPenrosemadenewdiscoveriesabouttheBigBangandblackholes.Sincethen,Hawkinghascontinuedtoseekanswerstoquestionsaboutthenatureoftheuniverse.In1988,hewroteABriefHistoryofTime,whichquicklybecameabest-s
6、eller.Readerswerepleasedandsurprisedtofindthatascientistcouldwriteabouthisworkinawaythatordinarypeoplecouldunderstand.Inthebook.Hawkingexplainsbothwhatitmeanstobeascientistandhowscienceworks.Hetellsreadershowdiscoveriesaremadeandhowtheychangetheworld.Science,accordingtoHawking,is
7、oftenmisunderstood:peopleoftenthinkthatscienceisabout"true"factsthatneverchange.Scientists,ontheotherhand,Hawkingwrites,knowthattheirjobisneverfinishedandthateventhebesttheorycanturnouttobewrong.AscientifictheoryistheresuItofthescientificmethod.Scientistslookattheworldandtrytodes
8、cribeandexplainwhattheysee.First,theycar
