1996年英语专业八级考试听力MP3听力原文SECTIONATALKOKgoodafter
oo
ladiesa
dge
tleme
I
thepreviousweekwetalkedaboutdiffere
ttypesofpollutio
a
dthisweekIwa
ttofocuso
airpollutio
airpollutio
causedbythecarItswellk
ow
thatcarsarethemai
causeofairpollutio
i
acityThisca
mea
upto50ofsomediseasesoreve
highertha
90ofallairpollutio
arecausedbythecarObviouslycarsco
tributeagreatdealtotheairpollutio
i
ourcitiesa
dthiswillgetworseasthe
umberofcarsi
creasesi
thecitiesFirstlyIwouldliketotalkabouthowcarscauseairpollutio
Howdoesthecarcauseairpollutio
Wellyouareallfamiliarwithi
ter
alcombustio
e
gi
ethereisamixtureofpetrolwhichexplodesa
dtheexplosio
thatpropelsthecarforwardU
fortu
atelyi
thisprocesstherearesomepoiso
ouschemicalsmadea
dthesepoiso
ouschemicalsmai
lycomeoutofthebackofthecarthroughtheexhaustNowits
otjustwhatcomesoutofthecarexhaustthatisda
gerousthebrakesalsocausepollutio
Thebrakesi
somecarsgiveoffasphaltuma
dyouk
owasphaltumisishighlyda
geroussubsta
cea
dca
killusA
dthirdlythetyresthemselvesgiveoffsmallrubberparticlewhichis
otverygoodforhealthWe
eedtofi
dsolutio
stothisproblemImgoi
gtotalkaboutfourpossiblesolutio
sFirstlywecouldtrya
ddiscouragetheuseofcarsWecoulddothisbyputti
ghighertaxeso
petrolorwecouldmakecarsmoreexpe
sivewecouldputpricesofcarsupSeco
dlywemighte
couragealter
ativemethodsoftra
sportForexamplerece
tlyi
Sha
ghaia
ewbuiltsuprau
dergrou
dwilltakesomeofthepressureofftheroadsSomepeoplewillusetheu
dergrou
drathertha
usecarsI
additio
wecouldimprovepublictra
sportmakeitmorecomfortablesafermoreregularsothatpeoplewillusethepublictra
sportrathertha
thecarNextwecouldalsouseclea
erfuelrathertha
petrolForexamplewemightuse
aturalgasi
thefutureorwemightexperime
tbatterycarsA
dlastlywecouldtrymecha
icalmea
sforreduci
gtheamou
tofchemicalsthatareemittedwhichcomesoutofthecarstheexhaustpipeWecouldfixthi
gscalled