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新标准大学英语(第二版)综合教程4(智慧版)南京师范大学编B4U8AR1.pptx

新标准大学英语(第二版)综合教程4(智慧版)南京师范大学编B4U8AR1.pptx

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WordsPhrases;WarmingUp;Namethelinesnow.;Text;Text;Longitude

1OnceonaWednesdayexcursionwhenIwasalittlegirl,myfatherboughtmeabeadedwireballthatIloved.Atatouch,Icouldcollapsethetoyintoaflatcoilbetweenmypalms,orpopitopentomakeahollowsphere.Roundedout,itresembledatinyEarth,becauseitshingedwirestracedthesamepatternofintersectingcirclesthatIhadseenontheglobeinmyschoolroom–thethinblacklinesoflatitudeandlongitude.Thefewcoloredbeadsslidalongthewirepathshaphazardly,likeshipsonthehighseas.;2MyfatherstrodeupFifthAvenuetoRockefellerCenterwithmeonhisshoulders,andwestoppedtostareatthestatueofAtlas,carryingHeavenandEarthonhis.

3ThebronzeorbthatAtlasheldaloft,likethewiretoyinmyhands,wasasee-throughworld,definedbyimaginarylines.TheEquator.TheEcliptic.TheTropicofCancer.TheTropicofCapricorn.TheArcticCircle.Theprimemeridian.EventhenIcouldrecognize,inthegraph-papergridimposedontheglobe,apowerfulsymbolofallthereallandsandwatersontheplanet.

;4Today,thelatitudeandlongitudegovernwithmoreauthoritythanIcouldhaveimagined40-oddyearsago,fortheystayfixedastheworldchangesitsconfigurationunderneaththem–withcontinentsadriftacrossawideningsea,andnationalboundariesrepeatedlyredrawnbywarandpeace.

;5Asachild,Ilearnedthetrickforrememberingthedifferencebetweenlatitudeandlongitude.Thelatitudelines,theparallels,reallydostayparalleltoeachotherastheygirdletheglobefromtheEquatortothepolesinaseriesofshrinkingconcentricrings.Themeridiansoflongitudegotheotherway:TheyloopfromtheNorthPoletotheSouthandbackagainingreatcirclesofthesamesize,sotheyallconvergeattheendsoftheEarth.;6Linesoflatitudeandlongitudebegancrisscrossingourworldviewinancienttimes,atleastthreecenturiesbef

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