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1Passage1DigitalCameras[00:45.70]①Accordingtoastandarddefinition,/[00:48.34]adigitalcameraisacamerathatproducesdigitalimages/[00:53.63]thatcanbestoredinacomputer,displayedonascreenandprinted./[01:00.17]②Yearsagopeopleusedtopossesstwodifferentdevices/[01:04.47]inordertotakepicturesandmakevideos./[01:08.42]③Thecreationofdigitalcameraswasmotivatedmainlybytwofactors./[01:14.04]④First,needtosparespace./[01:17.78]⑤Second,makeitmorecomfortableforpeople[01:21.07]todoboththingswithhigherqualityresults./[01:25.49]⑥Themulti-functionalismofdigitalcameras[01:28.62]andthecombinationofseveraldevicesinone/[01:32.12]makeitapopularchoiceforamodernman./[01:35.99]⑦Foryearsadigitalcamerahasbeenunaffordableformanyfamilies./[01:41.39]⑧However,thevarietyofdigitalcamerasandvariouspricesnowadays/[01:47.06]makeitpossibleforalmosteverysinglefamilytobuyadigitalcamera./[01:52.92]⑨Withincreasinglyfiercecompetition,/[01:55.51]thedigitalcameramanufacturerssatisfycustomers[02:00.35]withlowerpricesbutbestqualitystandards.Passage2TheMigrationofBirds[00:48.91]①Themostobviousfeatureofbirdsisthattheycanfly./[00:52.81]②Thisfacilitygivesthemgreatmobilityandcontrolovertheirmovements./[00:58.39]③Manyspeciescantravelquicklyandeconomicallyoverlongdistances—/[01:04.28]uptothousandsofkilometers,/[01:07.14]ifnecessary,crossingseas,desertsorotherinhospitableareas./[01:13.46]④Theyalsohavegreatorientationandnavigationalskills,/[01:18.14]andareabletorememberandre-find[01:21.42]remoteplacestheyhavepreviouslyvisited./[01:24.61]⑤Birdscantherebyoccupywidelyseparatedareasatdifferentseasons,/[01:30.80]returningrepeatedlytothesamelocalitiesfromyeartoyear./[01:35.76]⑥Althoughmigrationisevidentinotheranimalgroups,/[01:40.09]includinginsects,mammals,andfish,/[01:43.49]innoneisitaswidelyandwelldevelopedasinbirds./[01:48.22]⑦Thecollectivetravelroutesofbirdsspanalmosttheentireplanet./[01:53.69]⑧Asaresultofmigration,birddistributionsarecontinuallychanging—/[02:00.05]onregularseasonalpatterns,andonlocal,regionalorglobalscales.Passage32BenefitsofBecomingaTeacher[00:48.55]①Becomingateachergivesyouachance/[00:50.69]tospendamajorportionofyourdaywithchildrenoryoungsters./[00:55.26]②Withkidsaround,[00:56.63]youareapartoftheirworldofinnocenceandpurity./[01:01.01]③Itindeedcreatesahealthyworkenvironmentforyou./[01:05.14]④Onbecomingateacher,/[01:07.19]yougetachancetobewithchildren,[01:09.38]laughwiththem,thinktheirway/[01:12.00]andenjoytheirinnocentlysillyandhealthilynaughtybehavior./[01:18.17]⑤Apartfromthis,thenatureofyourjobisthat/[01:22.11]youdonotworkonweekendsandyougetyourshareofholidays./[01:28.07]⑥Becomingateacherentitlesyou/[01:31.03]forreceivingprivatescholarshipsandsponsorships[01:35.23]forteachingprograms./[01:37.10]⑦However,oneofthemostimportantbenefits[01:40.69]ofbecomingateacheristhat/[01:43.17]teacherscontributetotheshapingofthefuturegenerations./[01:48.39]⑧Theymakeadifferencetosociety/[01:51.09]byplayingavitalroleinnurturingyoungminds.Passage4Computer[00:47.10]①Withthedevelopmentofcomputertechnology,/[00:51.02]computersarebecomingincreasinglypopularallovertheworld./[00:55.78]②Thecomputerisbeingusedinmanyfields./[00:59.64]③Inindustry,business,education,medicine,[01:04.59]nearlyallwalksoflife,/[01:06.99]computershavemadetheirappearance,[01:09.32]providinggreatspeedandaccuracyforourwork./[01:13.85]④Computershavebeenusedinthehome,offices,[01:17.45]laboratoriesandresearchinstitutions,/[01:21.25]actingasthemostefficientandmultifunctionalinstruments/[01:25.94]forcalculating,sorting,filing,recordinganddistributing./[01:32.70]⑤Andtheyhavealsobecomeawindow[01:35.23]throughwhichwecanunderstandtheworldbetter./[01:39.17]⑥Duringthepastfiftyyears,[01:41.61]thecomputerhasbeenrapidlyadvanced./[01:45.21]⑦Eversincethecomputercameintobeing,[01:48.42]ithasexperiencedthedevelopmentofseveralgenerations./[01:53.74]⑧Theearliestcomputerswereofgreatsize,/[01:57.04]andhadnomatchforthelatestelectroniccomputers[02:00.93]inspeedandaccuracy./3[02:03.60]⑨Noweffortsarebeingmade[02:05.83]notonlytobringthehardwaretoperfection,/[02:08.84]butalsotoimprovethequalityofthesoftware.Passage5ComputerAddiction[00:45.84]①Nowadays,computerusershavestarteddeveloping[00:49.94]somebadhabitsregardingusingcomputers,/[00:53.41]whichhaveledtosignificantproblemsintheirlives./[00:57.32]②Thenegativeconsequencesfromcomputeraddiction/[01:01.30]aresimilartothoseofmanyotherknownaddictivedisorders/[01:05.62]thatcausementalandphysicaldisturbances./[01:09.00]③Asaresult,theterm“computerorInternetaddiction”[01:14.39]hascomeintouse./[01:16.39]④Itisalsoknownascyberspaceaddiction[01:19.55]andInternetaddictiondisorder./[01:22.47]⑤It'snotaneasytask[01:24.59]toidentifywhichtypeofcomputeraddiction[01:27.40]isresponsibleformostcomputeraddicts,/[01:30.81]astherearemanytypesofcomputeraddictions,/[01:34.24]suchasonlinegames,chat,e-mail,onlineshopping,[01:39.50]onlinegamblingandsoon./[01:42.11]⑥Nooneknowsinthefuture,/[01:44.40]whichtechnologywouldattractmorepeople[01:47.31]tobecomecomputeraddicts./[01:49.29]⑦However,therearevariousorganization