题目内容：
第45题答案是 ______
A．Some people might want to learn some of these songs by hearts. B．Most languages have become less and less speakers.
C．However, he was a frequent visitor to the Catawba reservation in South Carcinoma wherehe learned the language.
D．These languages don't have many native speakers.
E．For the rest of us, when a language dies, we lose the possibility of a unique way of seeing and describing the world.
F．As these language become more powerful, their use as tools of business and culture increase, as well.
G．Papus New Guines is an extremely rich source of different language, but more than 100of them are in danger of extinction(~).
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答案解析：