阿摩線上測驗
13. We assessed the _______ of speed cameras on Barcelona’s beltway in reducing the numbers of road
collisions and injuries.
(A) effectiveness
(B) affluence
(C) interrogation
(D) commitment
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統計： A(71), B(8), C(4), D(8), E(0) #2365523
統計： A(71), B(8), C(4), D(8), E(0) #2365523
