阿摩線上測驗
54. It was an exercise in _____ to use twitter for communication because you could use only 140 characters to express your idea or thought.
(A) acme
(B) epigraph
(C) machination
(D) brevity
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統計： A(12), B(25), C(16), D(137), E(0) #2007414
統計： A(12), B(25), C(16), D(137), E(0) #2007414
