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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Prior to the 20th century, many languages with small numbers of speakers survived for centuries. The increasingly interconnected modern world makes it much more difficult for small language communitie...
A.
remarkably well-kept in this modern world
B.
exceptionally powerful tools of communication
C.
quite possible to be revived instead of dying out
D.
a unique way of bringing different groups together