阿摩線上測驗
7. Some people are urging the government to put more controls on automobile ______. They warn that if this is not done, air pollution will only get worse.
(A) secretions
(B) emissions
(C) projections
(D) discharge
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統計： A(0), B(9), C(2), D(3), E(0) #3303510
統計： A(0), B(9), C(2), D(3), E(0) #3303510
