21. Which of the following titles best describes the passage?
(A) Dying and Saving of Languages
(B) Use of UNESCO’s Language Policy
(C) Languages and Effects of Colonization
(D) Fighting Back of Endangered Languages
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統計: A(13), B(2), C(4), D(2), E(0) #2652531
統計: A(13), B(2), C(4), D(2), E(0) #2652531