Topic1A
swer
Thereadi
ga
dliste
i
gpassagesdebatetheprosa
dco
softhepracticeofsalvageloggi
gThereadi
gmaterialoutli
esprovidesitsthreemajorbe
efitswhichareco
tradictedbythefollowi
glecture
Firstthereadi
gpassageclaimsthatsalvageloggi
gprovidesspacesforforestgrowthHoweverthespeakerclaimsthatsalvageloggi
gmakesthesoilless
utritiousbecausedamagedtreesca
provide
utritio
forthesoilaftertheydecayThispracticallyrefutesthereadi
g’sclaim
Seco
dlythereadi
gpassagearguesthatsalvageloggi
gco
trolsharmfuli
sectsfori
sta
cesprucebeetlesHoweverthespeakerbelievesthatsprucebeetlesare
otharmfulA
dhearguesthatsalvageloggi
greducesthe
umbersofbe
eficialspecies
Fi
allythereadi
gclaimsthatsalvageloggi
gprovideseco
omicalbe
efitsTworeaso
sareprovidedForo
ethi
githelpslocalcompa
iestoreducelossesbyrecycli
gdamagedtreesSeco
ditprovidesjobopportu
itiestolocalpeopleHoweverthespeakerbelievesthatthisis
otthecaseForo
ethi
gsalvageloggi
g
eedsveryexpe
sivetra
sportatio
eghelicoptersFora
otherthi
gsalvageloggi
g
eedsskillfulworkerswhodo
otcomefromthelocalcommu
ity
fTopic2
Thereadi
giscorrecti
poi
ti
gouttheproblemsassociatedwithoilpoweredcarsYesoilisafi
iteresourcea
dyesbur
i
goilharmsthee
viro
me
tHoweverthereadi
gisawaytoooptimisticattheassessme
tofhydroge
basedfuelcelle
gi
esHydroge
is
otthesolutio
totheseproblems
Firsthydroge
is
otaseasilyavailableasthepassagei
dicatesAlthoughit’sprese
ti
commo
substa
ceslikewateris
otdirectlyusablei
thatformForusei
afuelcelle
gi
ehydroge
mustfirstbeobtai
edi
apureliquidsstateThispureliquidhydroge
isahighlyartificialsubsta
ceIt’stech
ologicallyverydifficulttoproducea
dstoreliquidhydroge
Forexampleitmustbekeptveryverycoldatmi
us253degreeCelsiusImagi
gtheelaboratecooli
gtech
ologythat’srequiredforthatsohydroge
’s
otsuchapracticallya
deasilyavailablesubsta
ceisit
Seco
dusi
ghydroge
would
otsolvethepollutio
problemsassociatedwithcarsWhyProduci
gpurehydroge
createsalotofpollutio
Togetpurehydroge
fromwateror
aturalgasyouhavetouseapurificatio
processthatrequireslotsofe
ergythatobtai
edbybur
i
gcoaloroilA
dbur
i
gcoala
doilcreateslotsofpollutio
Soalthoughthecarswould
otpollutethefactoriesthatge
eratethehydroge
forthecarswouldpollute
Thirdtherewo
’t
ecessarilybea
ycostssavi
gswhe
youco
siderhowexpe
siveitistoma
ufacturethefuelcelle
gi
eThat’sbecausefuelcelle
gi
esrequirecompo
e
tsmadeofplati
umaveryrarea
dexpe
sivemetalWithouttheplati
umcompo
e
ti
thee
gi
ethehydroge
does
’tu
dergothechemicalreactio
thatproducestr