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UNIT3Journey____theMekongPart1ThedreamandtheplayMynameisWangKun.Eversincemiddleschool,mysisterWangWeiandI1____(dream)abouttakingagreatbiketrip.Twoyearsagoshe2____(buy)anexpensivemountainbikeandthenshe3____(persuade)metobuyone.Lastyear,she4___(visit)ourcousins,DaoWeiandYuHangattheircollegeinKunming.TheyareDaiand5___(grow)upinwesternYunnanProvinceneartheLancangRiver,theChinesepartoftheriver6___iscalledtheMekongRiverinothercountries.WangWeisoongotthem7____(interest)incyclingtoo.After8___(graduate)fromcollege,wefinallygotthechance9__(take)abiketrip.Iaskedmysister,“Wherearewegoing?”Itwasmysister10___firsthadtheidea11__(cycle)alongtheentireMekongRiverfrom12___itbeginstowhereitends.Nowsheisplanningourschedule13___thetrip.Iamfond14___mysister15___shehasoneseriousshortcoming.Shecanbe16__(real)stubborn.17___shedidn’tknowthebestwayof18___(get)toplaces,she19___(insist)thatsheorganizethetrip20____(proper).NowIknowthattheproperwayisalways21___way.Ikeptaskingher,“Whenareweleavingand22___arewecomingback?”Iaskedher23____shehadlookedatamapyet.Ofcourseshehadn’t;mysisterdoesn’tcare24___details.SoItoldherthatthesourceoftheMekong25__(be)inQinghaiProvince.Shegavemea26___(determine)look--thekindthat27___(say)shewouldnotchangehermind.WhenItoldherthatourjourneywouldbegin28__analtitudeofmorethan5,000meters,sheseemedtobeexcitedaboutit.29__Itoldhertheairwouldbehard30___(breathe)anditwouldbeverycold,shesaiditwouldbe31___interestingexperience.Iknowmysisterwell.Onceshehasmadeuphermind,nothingcanchange32___.Finally,Ihadtogivein.Severalmonths33____ourtrip,WangWeiandIwenttothelibrary.Wefoundalargeatlas34____goodmapsthatshoweddetailsofworldgeography.Fromtheatlaswecouldseethat35___MekongRiverbeginsinaglaciertomovequickly.Itbecomesrapids36___itpassesthroughdeepvalleys,37____(travel)acrosswesternYunnanProvince.Sometimestheriverbecomesawaterfalland38___(enter)widevalleys.Wewerebothsurprised__(learn)thathalfoftheriverisinChina.AfteritleavesChinaandhighaltitude,theMekong39___(become)wide,brownandwarm.40___itentersSoutheastAsia,itspaceslows.Itmakeswidebendsormeandersthroughlowvalleys41___theplains42___ricegrows.43___last,theriverdeltaenterstheSouthChinaSea.