1. ... 2. ... 3. ... 4. ... 5. ... 6. ... 7. ... 8. ...
V. Fill in the blanks with suitable words from the box, then answer the questions. (3
pts)
scientists pollution serious factories
exhaust require percentage reduce
Everyone wants to reduce (1) ... . But the pollution problem is as complicated
as it is (2) ... . It is complicated because much pollution is caused by things that
benefit people. For example,(3) ... from automobiles causes large
(4) ... of air pollution. But the automobiles provide transportation to millions of
people. (5) ……….. discharge much of the material that pollutes the air and water,
but factories give employment to a large number of people.
Thus to end or greatly (6) ……… pollution immediately, people would have to stop
using many things that benefit them. Most people do not want to do that, of course. But
pollution can be gradually reduced in several ways. (7) ……… and engineers can
work to find ways to lessen the amount of pollution that such things as automobiles and
factories cause. Government can pass and enforce laws that (8) ……….. businesses
and individuals to stop, or cut down on certain polluting activities.
Questions:
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