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Book2unit1Englishisknownasaworldlanguage,regularlyusedbymanynationswhoseEnglishisnottheirfirstlanguage.Likeotherlanguages,Englishhaschangedgreatly.ThehistoryoftheEnglishlanguagecanbedividedintothreemainperiods:OldEnglish,MiddleEnglishandModernEnglish.TheEnglishlanguagestartedwiththeinvasionofBritainbythreeGermanictribesduringthe5thcenturyAD,andtheycontributedgreatlytotheformationoftheEnglishlanguage.Duringthemedievalandearlymodernperiods,theinfluenceofEnglishspreadthroughouttheBritishIsles,andfromtheearly17thcenturyitsinfluencebegantobefeltthroughouttheworld.TheprocessesofEuropeanexplorationandcolonizationforseveralcenturiesledtosignificantchangeinEnglish.Today,AmericanEnglishisparticularlyinfluential,duetothepopularityofAmericancinema,television,music,tradeandtechnology,includingtheInternet.517(calligraphy)Chinesecalligraphyisauniqueartandtheuniquearttreasureintheworld.TheformationanddevelopmentoftheChinesecalligraphyiscloselyrelatedtotheemergenceandevolutionofChinesecharacters.Inthislongevolutionaryprocess,Chinesecharactershavenotonlyplayedanimportantroleinexchangingideasandtransmittingculturebutalsodevelopedintoauniqueartform.Calligraphicworkswellreflectcalligraphers'personalfeelings,knowledge,self-cultivation,personality,andsoforth,thusthereisanexpressionthatseeingthecalligrapher'shandwritingislikeseeingtheperson.AsoneofthetreasuresoChineseculture,Chinesecalligraphyshinessplendidlyintheworld'streasurehouseofcultureandart.book2unit2AM00C(massiveopenonlinecourse)isanonlinecourseaimedatunlimitedparticipationandopenaccessviatheweb.M00Csarearecentdevelopmentindistanceeducationandhavenowbecomeasurgingtrendinhighereducation.Theseclassesareaimedatexpandingauniversity'sreachfromthousandsoftuition-payingstudentswholiveintown,tomillionsofstudentsaroundtheworld.Inadditiontotraditionalcoursematerials,M00Csprovideinteractiveuserforumstosupportinteractionsbetweenstudentsandprofessors.M00Cscanencouragecommunicationamongparticipantswhobringavarietyofviewpoints,knowledge,andskillstothecourse;inspirepeopletotryonsubjectsthattheywouldn'totherwisepursueoreventryoneducationitself;providemultiplewaystoengagewithcoursematerial,encouragingmultimodal()learningthatcanaddresstheneedsoflearnerswithavarietyoflearningstyles;andinspirebetterteachinganduseoftechnologiesforface-to-facecourses.Inrecentyears,withthedevelopmentofInternettechnology,theconstructionofdigitaleducationresourcesofourcountryhasmadegreatachievements.Manyuniversitieshavesetuptheirowndigitallearningplatforms,anddigitalteachingisplayinganincreasinglyimportantroleineducation.Comparedwiththetraditionalwayofteaching,thedigitalwayhasalotofadvantages.Ononehand,digitalteachingmakesglobalsharingofteachingresourcespossible;ontheotherhand,itexpandsthelearner'sstudytimeandspacetolearn,allowingpeopletogetaccesstothedigitalvirtualschoolsthroughtheInternetanytimeandanywhere.Theseadvantagesmakeitpossibleforpeopletoshiftfromone-timelearningtolifelonglearning.BOOK2unit3AsanimportantpartoftheAmericanculturevaluesystem,individualismisadmiredbymostAmericanpeople.Americansviewthefamilyasagroupwhoseprimarypurposeistoadvancethehappinessofindividualmembers.Incontrasttomanyothercultures,theprimaryresponsibilityoftheAmericanfamilymemberisnottoadvancethefamilyasagroup,eithersociallyoreconomically.Whatwouldbebestforthefamilyisnotusuallyconsideredtobeasimportantaswhatwouldbebestfortheindividual.Withfreedomcomestheresponsibilitytocareforoneself,foritisthefreedomofchoicethatcarrieswithittheresponsibility:toaccepttheconsequencesofthechoices.ManyAmericansgivetheirchildrenalotoffreedombecausetheywantthemtobeindependentandself-reliant.AlongwiththeAmericanemphasisonindividualfreedom,thebeliefinequalitybetweenparentsandchildrenalsohashadastrongeffectonthefamily.filialpietycodeofethicsinstitutionaletiquetteFilialpietyisthebasiccodeofethicsinancientChinesesociety.Chinesepeopleconsiderfilialpietyastheessenceofaperson'sintegrity,familyharmony,andthenation'swell-being.WithfilialpietybeingthecoreofConfucianethics,ithasbeenthemoralstandardfortheChinesesocietytomaintainthefamilyrelationshipforthousandsofyears.It'sundoubtedlyatraditionalChinesevirtue.Thecultureoffilialpietyisacomplexconcept,richincontentandwideinrange.Itincludesnotonlyculturalideasbutalsoinstitutionaletiquettes.Generallyspeaking,itreferstotheobligationofchildrentotheirparentsrequiredbythesociety,includingrespect,care,supportfortheelderlyandsoforth.FilialpietyisfundamentaltotheancientOrientalcivilization.BOOK2unit4Valentine'sDayonFebruary14iscelebratedinvariousAmericanandEuropeancountries.Itisaholidayofloveandromanceusuallybyexchangingvalentinesorlovetokensbetweenlovers.Therearedifferentoriginsregardingthefestival.OnelegendgoesthattheRomansputapriestnamedSaintValentineintoprisonforrefusingtobelieveintheRomangods.OnFebruary14,ValentinewasputtodeathnotonlybecausehewasChristian,butalsobecausehehadcuredthejailer'sdaughterofblindness.ThenightbeforehewasexecutedhewroteherafarewelllettersignedFromyourValentine.Later,February14becameaholidayforpeopletos