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1、ModelTest1HobbiesInearlytimes,mostpeopleweretoobusymakingalivingtohavemanyhobbies.Todayasmachineshavereducedtheamountoftimetheymustspendontheirjobs,peoplehavemoretimethanbeforeforhobbies.Peopletakeuphobbiesbecausetheseactivitiesofferenjoyment,friendship,knowledge,andrela
2、xation.Sometimestheyevenyieldfinancialprofit.Hobbieshelppeoplerelaxafterperiodsofhardwork.Theyprovideabalancebetweenworkandplay,especiallyforworkerswhodothesamemonotonoustasksalldaylong.Hobbiesalsoofferinterestingactivitiesforpersonswhohaveretired.Thosewhohavedevotedhobb
3、iesneverneedtoworryaboutwhattodowiththeirnewly-foundleisurehours.Anyonecanfollowasatisfyinghobby,regardlessofhisage,position,orincome.AfamousCanadiandoctorexpressedthevalueofhobbiesbysaying,“Nomanisreallyhappyorsafewithoutahobby.”ModelTest3LetChildrenLearntoJudgeTheirOwn
4、WorkAchildlearningtotalkdoesnotlearnbybeingcorrectedallthetime.Ifcorrectedtoomuch,hewillstoptalking.Henoticesathousandtimesadaythedifferencebetweenthelanguageheusesandthelanguagethosearoundhimuse.Bitbybit,hemakesthenecessarychangestomakehislanguagelikeotherpeople’s.Inthe
5、sameway,whenchildrenlearntodoalltheotherthings,suchaswalking,running,climbing,andridingabicycle,theylearntodothemwithoutbeingtaught.Rather,theycomparethoseperformanceswiththoseofmoreskilledpeople,andslowlymaketheneededchanges.Butinschoolwenevergiveachildachancetofindouth
6、isownmistakesforhimself.Weactasifwethoughtthathewouldnevernoticeamistakeunlessitwaspointedouttohim.Soonhebecomesdependentontheteacher.ModelTest4ANewNeedforTrafficLightsSpaceisgettingcrowded.That’sthelatestworryformanyscientists.Abouttenthousandobjectsareorbitingourplanet
7、snow.Somearesatellitesthathaveajobtodo.Otheritemshavefinishedtheirwork.Partsofrocketsmayhavebeendiscardedduringaflightandleftbehindinspace.Thisisbecomingarealproblem.Moreitemsinspaceleadtomoredanger.Someoftheobjectsnowfloatingthroughspacearejustafewinchesinsize.Buttheyca
8、nstilldoharm.Iftheyhitaspacecraftorspacelab,theymightdestroyit.Spaceagenciescannowlocateobjectsinspacew
