Which is NOT the source of Air Pollution?
A.Waste gases from automobiles
B.Burning coal to heat homes
C.Sewage and waste water from homes and factories
D.Emissions of harmful gases from factories
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Which is NOT the effect of Air Pollution?
A.Cause people to get sick
B.Kill animals and plants
C.Give off bad smells
D.Produce acid rain
Unfortunately, ___ unforeseen circumstances, this year's show has beencancelled.
A.due to
B.in case
C.a set of
D.in order to
The 1939-1945 world war involved the mass of the ___.
A.popular
B.population
C.popularity
D.pop
Elections will now take place on Sunday.What is the meaning of the ‘take place’in the sentence?
A.to happen, especially after previously being arranged or planned
B.replace
C.come to
D.take off
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