阿摩線上測驗
26. Linguists estimate that about half of the 6,500 languages worldwide are endangered or on the brink of ________.
(A)distinction
(B)revival
(C)extinction
(D)survival
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統計： A(20), B(5), C(80), D(13), E(0) #758653
統計： A(20), B(5), C(80), D(13), E(0) #758653
