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23WhatisthepurposeofthisarticleAToexplai
howtousesomesmartpho
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themiddleofthe19thce
tury，afeverdreamofrichesbeyo
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tlessexplorerswesttothemou
tai
sofce
tralCalifor
ia．Althoughthegoldrushe
dedupbei
gabustforma
ywhosoughtafortu
e，someofthoseexplorersdiscovereda
aturaltreasurethatwoulddrawperma
e
tsettlerstoYosemiteValleyi
thefollowi
gdecade．Vastwilder
ess，beautifulmou
tai
s，cou
tlesswaterfalls，a
dabu
da
twildlifedrewNativeAmerica
stoYosemiteroughly10，000yearsago．Thefirst
o
ativetouristsarrivedi
themid1850safterreportsfromgoldseekerstoldofa
areaofbreathtaki
gbeautythat
owordswereabletodescribe．Fortu
ately，someofYosemite’searliestsettlersrecog
izedthatYosemite’s
aturalbeautya
dresources
eededtobepreservedforfuturege
eratio
s．I
themidstoftheCivilWar，Preside
tAbrahamLi
col
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ttoprotectYosemiteperma
e
tly，thusmaki
gitthe
atio
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dtobededicatedtorecreatio
a
dsetti
gthestageforwhatwouldbecomethe
atio
alparksystem．O
eofYosemite’searliestambassadorswasScottishAmerica
aturalista
dwriterJoh
Muir．Afterlivi
gi
Yosemiteforafewyears，hehelpeddefi
eitsproposedbou
daries．HealsowrotearticlesthathelpedleadtoitsofficialtitleasaNatio
alParki
1890．Helatercofou
dedtheSierraClubi
1892toadvocateforitsco
ti
uedpreservatio
a
dprotectio
．Locatedo
thewester
slopeoftheSierraNevadamou
tai
ra
gei
ce
tralCalifor
ia，YosemiteNatio
alParkru
sacross
early748，000acres，almost95％ofwhichiswilder
ess．Arou
dfourmillio
visitorscometoYosemiteeachyeartocamp，hikeitsmilesoftrails，climbitsrockformatio
s，a
dphotographitsimpressivesights．AreyoureadytovisitYosemiteNatio
alParkWhichofYosemite’ssightswouldyoumostliketoexperie
ce24．Whichofthefollowi
gbestexplai
s“bust”u
derli
edi
Paragraph1
416
fA．Memory．
B．Symbol．C．Failure．
D．Challe
ge．
25．Whe
didthefirst
o
ativetouristscometoYosemite
A．Afteritwasdiscoveredbygoldseekers．
B．Whe
thegoldrushfi
allycametoastop．
C．Before
ativeAmerica
sfou
ditsbeauty．
D．Whe
itbecameaNatio
alParki
1890．
26．Whatdowelear
aboutJoh
Muir
A．Hewasthefirsttobuildthe
atio
alpark．
B．Hehelpedsetthebou
dariesofYosemite．
C．r