阿摩線上測驗
13. The six_____ languages of the United Nations are Arabic, Chinese, English, French, Russian, and Spanish.
(A) official
(B) plastic
(C) hollow
(D) vivid
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統計： A(557), B(69), C(35), D(23), E(0) #1584420
統計： A(557), B(69), C(35), D(23), E(0) #1584420
