第1个回答 2019-11-06
city
pollution
caused
by
traffic
as
we
know,the
enviroment
of
the
earth
is
getting
much
worse.i
think
traffic
is
a
big
source
of
pollution
in
cities.
we
must
understand
where
the
traffic
pollution
comes
if
we
want
to
improve
the
quality
of
the
air.maybe
there
are
some
examples
which
could
explan
the
idea.for
example,the
exhaust
gas
causing
air
pollution
is
one
of
the
reasons.with
the
increase
of
the
personal
car.the
exhaust
of
gas
is
much
more
than
before.also,noise
pollution
is
one
important
component
of
the
pollution.to
be
reserched,we
will
become
ill
if
we
exposed
in
th
enviroment
of
noise.else,dust
pollution
caused
some
inconvenient
for
our
life.
what
shall
we
do?maybe
we
can
change
the
fuel
of
the
car
and
creat
some
new
way
to
reduce
the
use
of
the
fuel.also,wen
could
advise
people
to
drop
the
personal
car
and
go
to
work
by
bus.only
in
this
way
could
we
live
in
a
clean
world.
嘿嘿
没时间给你写啦，就这一篇吧，第一个依据个人也是不一样的