2024剑桥雅思讲义Matching_Sentences_Questions_Strategy_Practice.docx
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1、IELTSadvantageMatChingSentencesQuestionsStrategyPracticeGuitarstorageandmaintenanceProperlymaintainingavaluableguitarkeepsitvaluable.Guitarscantakealotofabuse,especiallyifyouplayliveshowsandtour,andevenifitprettymuchsoundsthesame11,lackofmaintenancemaysuddenlyrendertheinstrumentunplayable.Youdontnee
2、dtocarefullyexamineaguitareveryday,butoccasionalcheck-upskeepitsoundinggoodandreadytoplay.Theeasiestwaytotakecareofyourguitaristostoreitproperly.Themoreexpensivetheguitar,thebetteryourstorageshouldbe.Itisgenerallyacceptedthattheairhumidityshouldbeneithertoohighnortoolow,thussomewhereinthe45-55%range
3、,andthetemperatureoftheareashouldbeabout65-75oF(18-24).Thesetwofactorsarethebiggestthreattoaninstrument,becausechangesinmoistureandtemperaturecancausepermanentwarpingoftheneckandothercriticalparts.Forguitarsmadeoutofsolidwood,itisadvisabletouseahumidifiertopreventcracksanddamagefromweatherchange.Ont
4、heotherhand,guitarsmadeoutofmulti-layered(plywood)wood,typicallyinbudgetguitars,canwithstandrelativelymorehumidityandtemperaturechanges.Keepingtheguitarinacaseawayfromdirectsunlightcanhelpwithincreasingthelifeoftheguitar.Thesurestwaytokeepyourguitaringoodshapeistorememberthissimplerule:Donotexposeth
5、eguitartoanyclimateconditionthatyouwouldnotwanttobeexposedto.Ifyoukeepthisinmind,yourinstrumentwilllikelylastyearsandyears.Avoidlargeorrapidchangesinhumidity.Likeyourbody,theguitargetsusedtotheclimateitisin,andsuddenlychangingitcausesstress.Humidityisthemostdangerousthingthatattacksaninstrument,beca
6、usewhenwoodgetswet,thecellwallsbecomesofteranditismoreeasilybent.Often,thestringsthemselvesareenoughtobendtheneck.Also,ifthehumiditystaysverylow,thenthewoodwillcrackandthestructurewillweaken.Temperatureonitsownislessdamagingtotheguitar.Woodisgenerallytoleranttochangesintemperature,andforthemostparti
7、texpandsandcontractstogether.Extremetemperaturesorrapidtemperaturechanges,however,cancauseseriousdamage,especiallywhencombinedwithextremehumidity.Changesintemperaturealsoaffectstrings,especiallynylonstrings.Asignificantchangeintemperaturetypicallydetunesthestrings.Otherareastowatchfortemperature-rel
8、ateddamageareanygluedjoins,likewheretheneckmeetsthebody,orthefretboardattachestotheneck.Neverexposeyourinstrumenttoextremetemperaturesforalongtime.Forinstance,leavingyourguitarinacarinthesummerallday,orleavingitoutsideovernightareIELTSADVANTAGEMatchingSentencesQuestionsStrategyPracticesurewaystocomp
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