Choose the most suitable answer A, B, C, or D to complete the following passage

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