Question IV. Complete the passage with the words in the box, then answer the questions
bellow.
which
them
because
of
from
as
(1) complicated
(2) much pollution is caused by things that benefit
(3) automobiles causes a large percentage of all air
Everyóne wants to reduce pollution. But pollution problem is
as it is serious. It is complicated
people. For example, exhaust
pollution. But automobiles provide transportation for millions of people. Factories discharge
much of the material
large number
and pesticide are important aids to the growing of crops. Thus, to end or reduce pollution
immediately, people would have to stop using many things that benefit
people do not want to do that, of course. But pollution can be gradually reduced in several ways.
(4) pollutes the air and water, but factories give employment to a
(5) people. Too much fertilizer or pesticide can ruin soil, but fertilizers
(6). Most
the quertions