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(4)第二个原因r
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(5)第三个原因r
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(6)重申造成现状的最重要原因r
r
(7)我的建议r
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范文:pollutio
r
r
Mostofustodayrecog
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viro
me
talpollutio
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agreatlyseriousproblemLotsofpla
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gi
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viro
me
talpollutio
shouldberespo
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oto
lytohuma
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tForexampletopreve
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actuallyistheresultofagrowi
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tr
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Therefore
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模块(5)r
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Whydoessuchcircumsta
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注释:r
r
1提出论题r
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(2)说明现状r
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(3)理由一r
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(4)理由二r
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(5)理由三r
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(6)理由三引起的后果r
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(7)解决方法r
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范文:pollutio
ofe
viro
me
tr
r
Thesedaysweofte
hearthatourlivi
gco
ditio
saregetti
gmorea
dmoreseriousbecauseofthedestructio
ofoure
viro
me
tItiscommo
thatma
ytreesa
da
imalsare
earexti
ctio
a
dtheallimporta
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hasbee
destroyedr
r
Whydoessuchcircumsta
ceoccuri
spiteofsocialprotectsForo
ethi
gthepopulatio
oftheworldisi
creasi
gsorapidlythattheworldhasbee
socrowdedFora
othertheoveruseof
aturalresourceshasi
flue
cedthebala
ceof
aturalecologyWhatismoresi
cethei
dustrialrevolutio
itis
aturalthatagreat
umberoffactorieshavebee
spri
gi
guplikemushroomsThesmokea
dharmfulcher