summary例子和问题详解.doc

summary例子和问题详解.doc

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1、TheDevelopmentofWritingFewpeoplewoulddisagreewiththebeliefthatprimitivemanlearnedtospeaklongbeforehedevelopedasystemofwriting.Butwhilehisearlyspokenlanguagemayhavebeennothingmorethanafewsounds,earlymancouldtransmitmessagesacrossdistancesbymeansofsignalsfromdrums,smokeand

2、fire.Itwasprobablyadesiretorecordmessagesthatledtothedevelopmentofalphabets.Forearlyman,whocouldspeakandwhocouldsendmessages,couldnotputthosemessagesintopermanentform.Thedesiretohavepermanentrecordsmaynotbeeasilyunderstoodintoday’sworldwhereelectronicsciencehasmadediskan

3、dtaperecordingscommonplace.Ifearlymanwantedtoleaverecordsofpasteventstoremindhimofgoodtimesandbad,hehadtodependonhismemory,andonprimitivemarkingssuchaspilesofstones,cuttingsonsticks,etc.Thelimitationsofthissystemledearlymantoturntorockdrawingsfortheexpressionofsophistica

4、tedideas.Thisformofwritingdependedonpicturestoconveyideas,andalthoughmoreadvancedthanpreviousdevelopments,itwasstilltoolimitedformantobeentirelysatisfied.Manfinallywasabletodevelopasystemofpicturewritingthatassociatedsymbolsandsound.Thissystem,whichwasoriginatedbytheearl

5、ySumeriansandtheEgyptiansmorethan3,000B.C.,isbasedonthesameprinciplethatwesuetodayinmostworldalphabets.Itwasabout1,000B.C.thatthePhoenicianstookthecomplicatedpicturealphabetsoftheEgyptiansandsimplifiedthenintoabout30symbols,eachonestandingforaconsonantsound.Finally,thean

6、cientGreeks,about800B.C.,refinedthisPhoenicianalphabetandaddedsignsforvowelsounds.ThealphabetusedinEnglish,andinmanyotherworldlanguages,iscalledtheRomanalphabetbecauseitwasdevelopedbytheRomanswhohadtakenmostofitfromanotherItalicpeople,theEtruscan,who,intheirturn,hadlearn

7、editfromtheancientGreeks.LettersonancientmonumentsinRomeprovethattheRomanalphabet,thesamealphabetusedtoday,hadbeenperfectedbyA.D.114.SecrettoLongevityLiesinGenes,StudyFindsTueJun11,5:16PMETbyMaggieFox,HealthandSciencesCorrespondentWASHINGTON(Reuters)Wanttolivetobe100?Pic

8、koldgrandparents.It’sanoldirony,butresearcherssaidonTuesdaytheyhadshownthisisremarkablytruewhenitcomest

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