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1、Exercises1.Revisetopicsentences.Topicsentencesasbelowarenoteffectiveone.Trytofindoutwhatiswrongandrevisethem.Model:Original:Columbuswasanexplorerinthe1400s.Revision:TravelhaschangedsincethedaysofColumbus.(1)Original:Internetisthetopicoftheparagraph.Revisio
2、n:(2)Original:Ihadaverybrightstudentlongago.Revision:(3)Original:PeoplewastetimeRevision:(4)Original:Everyextrahourofwatchingtelevisionmeantan8%increaseinthechancesofdevelopingsignsofdepression.Revision:(5)Original:Failureisthemotherofsuccessandfearingmist
3、akespreventsusfrommakingchangeandslowdownpersonalprogress.Revision:2.Identifythetopicsentenceineachofthefollowingparagraphs.Supplyatopicsentenceifthereisnoexplicitoneinit.(1)Operainthe19thcenturydevelopedintwomainways.Fist,therewasthetypethatpreferredtogiv
4、ethegreatestimportancetothevoice,keepingtheorchestramoreasanaccompaniment.Andsecond,therewasthetypethatreducedtheimportanceofthesingersandallowedtheorchestratodominatetheproceedings.ThefirsttypecouldbedescribedasOPEAROFVOCALMELODY.Youcanfidexamplesinthewor
5、kofRossini,Belline,Donizetti,andofcourse,Verdi,ThesecondtypeisreallySYMPHONICOPERA.Wagnerisitsmostimportantexponent.(2)Increasinglyoverthepasttenyears,peoplehavebecomeawareoftheneedtochangetheireatinghabits,becausewhatwechoosetoeatcaninfluenceourhealth—for
6、betterorworseConsequently,therehasbeenagrowinginterestinnaturalfoods.(3)Ofallhumanemotions,noneismorenaturalthantheloveforthetown,thevalleyortheneighborhoodwherewegrewup.Ourhomelandspeakstoourmostintimatememories,movesourdeepestemotions.Everythingthatisapa
7、rtofitbelongstousinsomemeasure.Inawaywebelongtoit,too,asaleafbelongstoatree.(4)StandingintheSiciliansunwithyourfeetwashedbythewavesoftheTyrrhenianSea,it’seasytoforgetthatthere’smoretothetri-cornerislandthanbeauty.Thebeachesaremagnificent—turquoisewatersstr
8、etchingouttothehorizon,softsand,gentlewavesandsomeoftheclearestwaterintheworld.Inthedistance,ontherockierportionsofthecoast,volcanicrockjutsoutofthesea,itsdarkcolorandjaggededgeaddingdramatothevista.3.Choosea
