完形填空。
Huandreds of years ago, life was1 than2 today. People didn't have modern machines. There
3modern medicine, either.
Life today4 new problems. One of the biggest is pollution. Water pollution has5 our rivers
and lakes dirty. It kills our fish and affects our drinking water. Noise pollution makes us6 louder and
7 . Air pollution is the most serious kind of pollution. It affects every living thing in the world.
Cars, planes and factories all pollute our air every day.Sometimes the pollution is so8that it is like
a quilt (被子)9a city. This kind of quilt10 smog (雾).
Many countries are new laws to fight pollution. Factories must now clean their water11
away. They mustn't blow dirty smoke into the air.
We need to do many other things.We can put a waste thing in the dustbin and not throw it on the ground.
we can go to work by bus12 with our friends13 . If there are fewer people driving, there will be
14pollution.
Laws are not15 . Every person must help to fight pollution.
( )1.A.more hard
( )2.A.they are
( )3.A.were not
( )4.A. bring
( )5.A.made
( )6.A.say
( )7.A.felt happy more quickly
B.get angry much easier
C.become angry more easily
D.feel sad more slowly
( )8.A. thin
( )9.A.around
( )10.A.calls
( )11.A.before they are thrown
B.when they are thrown
C.after it is thrown
D.before it is thrown
( )12.A.and
( )13.A.in the same car
( )14.A.little
( )15.A.enough B. more harder
B.they were
B.was no
B.have
B.let
B.talk




B.thick
B.on
B.is seen




B.or
B.go to our office
B.less
B.good enough C. much harder
C.it was
C.were
C.have got
C.taken
C.tall




C.hard
C.in
C.is called




C.but
C.in different cars
C.much
C.enough good D.much more harder
D.it is
D.was
D.has brought
D.changed
D.spoke




D.light
D.over
D.is like




D.if
D.go home
D.more
D.good