40/ Extinct / of/ many / animals /already/ become /have /rare/ species
IV/ READING
Read the following passage then answer question 40- 45 . After each question
there are four possible answer marked A, B, C, and D .Choose the correct answer by
circling its corresponding letter A, B, C, or D
One of the most serious problem threatening human life is the dirtying and
poisoning of air and water .It is pollution of our environment .
Air pollution occurs when wastes are poured in to the atmosphere and the air
becomes contaminated and unpleasant to breathe . We depend for life on the air we
breathe. As that air becomes more and more polluted ,hazards to heath increase .Today
we have industrial air pollutants from factories and mills and engine exhaust fumes.
Vehicles account for sixty percent of air pollution in the cities .That ‘s why some large
cities have to ban cars from the city centre to wipe out smoke and limit the emission of
poisonous gases and dangerous chemicals from industrial smoke stacks in order to
clean the air in our living environment as much as possible.
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