阿摩線上測驗
29. Parking vehicles without turning off the starter to do something is one of the most common ____ of traffic regulations.
(A) emulsifiers
(B) deteriorations
(C) mixtures
(D) violations
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統計： A(1), B(0), C(0), D(9), E(0) #3382146
統計： A(1), B(0), C(0), D(9), E(0) #3382146
