新编大学英语book3_unit2_leadin

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1、PartOnePreparation1.AnArgumentAbouttheSun2.BedtimeStories3.ChineseFables4.SayingsRelatedtoMythsandLegendsPartOne:Preparation>>AnArgumentAbouttheSun1.AnArgumentAbouttheSunDirections:Readthefable(alegendormyththathasamoral)anddiscussingroupsthequestionsbelow.PartOne:Preparation>>AnArgumentAbou

2、ttheSunWhenConfucius(孔子)wastravelingintheeasternpartofthecountry,hecameupontwochildreninaheatedargument,soheaskedthemtotellhimwhatitwasallabout.“Ithink,”saidonechild,“thatthesunisneartousatdaybreakandfarawayfromusatnoon.”Theothercontendedthatthesunwasfarawayatdawnandnearbyatmidday.“Whenthesu

3、nfirstappears,”saidonechild,“itisasbigasthecanopy(马车顶篷)ofacarriage,butatnoonitisonlythesizeofaplateorabowl.Well,isn’tittruethatPartOne:Preparation>>AnArgumentAbouttheSunobjectsfarawayseemsmallerwhilethosenearbyseembigger?”“Whenthesuncomesout,”pointedouttheother,“itisverycool,butatmiddayitisa

4、shotasputtingyourhandinboilingwater.Well,isn’tittruethatwhatisnearertousishotterandwhatisfartheroffiscooler?”Confuciuswasunabletosettlethematterforthem.Thetwochildrenlaughedathim,“Whosaysyouarealearnedman?”(FromLiezi)PartOne:Preparation>>AnArgumentAbouttheSun1)Howwouldyouanswerthechildren’sq

5、uestion?Boththechildrenarewrong.Thesungivesoutalmostthesameamountofheatatanytimeoftheyear.Wefeelsometimesitishotter,andsometimesitiscooleronlybecausetheanglebetweenthesunlightandthesurfaceoftheearthvariesconstantly.Thatthesunseemsbiggeratdaybreakisanopticalillusion.Whenitappearsonthehorizon,

6、onlyasmallpartoftheskyisbrightenoughtobeseenagainstit.Thismakesthesunseembigger.Butwhenit’shighupinthesky,itseemssmallerwiththehugebrightskyagainstit.PartOne:Preparation>>AnArgumentAbouttheSunThatitiscoolerinthemorningthanatmiddayisnotbecauseofthechangeofthedistancebetweenthesunandtheearth.I

7、tisbecauseofthechangeoftheanglebetweenthesunlightandthesurfaceoftheearth.Wedon’tfeelveryhotinthemorningbecauselesssunlightisreceivedperunitofareawhentheangleissmaller.Butastimepasses,moreandmoresunlightperunitofareapenetratestheatmosphereandreaches