Whodoesn'tloveaclassclown?Theyspoillessonsstealthespotlightandtomakemattersworse，sometimesthey'reactuallyfunny.It'snoteasytoenforceclassruleswhenyou'relaughing.Butwhatifinsteadofseeingthemasanuisancewe

　　Whodoesn'tloveaclassclown?Theyspoillessonsstealthespotlightandtomakemattersworse，sometimesthey'reactuallyfunny.It'snoteasytoenforceclassruleswhenyou'relaughing.Butwhatifinsteadofseeingthemasanuisancewesawthemasagift?

　　LawrenceDavisisthetypicalclassclownoverconfidentandnaughty."Everyteacherenjoysme"hesays."I'mnotgoingtosayI'mthelifeoftheclassbutIbringtheclasstolife."

　　Ithasn'talwaysbeenthatway.“Hewashopelessasafreshman”remembersLeannFergusonwhotaughtLawrenceinherworldhistoryclass."Heactedoutimproperlyallthetime"shesays.ButtoherLawrencewasn'tjustanotherclassclown.Hewasgifted.Andhisgiftwashisdynamicpersonality.

　　"Typicallytheclassclownisnottroublingtheclassforthesakeofdisruptingclass"saysLaurenceSteinbergapsychologist.Classclownsusuallyactoutwhenthey'reboredorconfusedhesays.Theywouldrathersticktosomethingthey'regoodatlikemakingpeoplelaugh.

　　AndmostofthetimeFergusonwouldlaughrightalongwithLawrence.Hewasstillexpectedtodotheclassworkandhisjokesweren'ttoleratediftheywereattheexpenseofanotherstudent.

　　RossGreenewhostudiesdisruptivestudentscallsthatkindofgifta"rawskill".Andrawskills"havetobemoldedsothattheyarebeingusedinthebestinterestofthegroup"hesayswhichtakespatienceandachangeinperspective(视角).

　　FergusonjusthadtoputLawrence'sgifttogooduse.Sosheenlistedhishelptogettheclassbackontrackwhentheywerehavingahardtimefocusing.Lawrencebegantounderstandthathewasanexampletohisclassmates.Theyfollowedhislead.Thebetterhebehavedinclassthebettertheybehavedtoo.Withtimehewentfromanenemytoafriend.

　　Andnowthisclassclownisontracktograduate.Heisapplyingforcolleges.He'susinghisgiftforgood.

　　21.TheunderlinedwordinPara.1mostprobablymeans_______.

　　A.anannoyingstudent B.atalentedstudent

　　C.acrazystudent D.ahard-workingstudent

　　22.AccordingtoSteinbergtheclassclownsmaketrouble____