阿摩線上測驗
43 All crew members must wear life jackets in case of an emergency _____ at sea.
(A) schedule
(B) routine
(C) incident
(D) issue
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統計： A(0), B(2), C(3), D(1), E(0) #3930886
統計： A(0), B(2), C(3), D(1), E(0) #3930886
