Air pollution is caused
(1) ill health in human beings. In a lot of countries, there are
(2)
limiting the amount of smoke factories can produce although there is not enough
of smoke on the atmosphere. Doctors have
(3) on the effects
(4) that air pollution causes
(6) also increased air pollution in most cities. The
(5) diseases. The
gases from the exhausts of cars
(7) of petrol
produces a poisonous gas, which is often collected in busy streets circled by high buildings. Children
(9) as other children,
(8) in areas where there is a lot of lead in the atmosphere can not think as
and are clumsy when they
1. A. from
(10) their hands.
B. on
C. over
D. of
C. problems
C. information
C. disagreed
C. liver
D. regulations
D. newspaper
D. proved
2. A. laws
B. ideas
3. A. newS
B. article
B. pointed
4. A. agreed
5. A. lung
B. heart
D. stomach
6. A. had
B. have
C. has
D. having
7. A. water
B. lead
C. gas
D. exhaust
8. A. lived
B. live
C. to live
D. living
D. slow
C. quickly
C. handle
9. A. quick
B. slowly
10. A. touch
B. use
D. collect
Your answers: