阿摩線上測驗
33.According to the passage, what do people do to cause air pollution?
(A) They cause forest fires.
(B) They cut down trees recklessly.
(C) They dump garbage into rivers.
(D) Their cars and factories emit particulates.
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統計： A(0), B(1), C(0), D(5), E(0) #3402847
統計： A(0), B(1), C(0), D(5), E(0) #3402847
