The author has used American Indian languages as an example to show that they are_________

学历类 公共英语 已帮助 人

The author has used American Indian languages as an example to show that they are__________.

A.just as old as some well-known languages

B.just as sophisticated as some well-known languages

C.more developed than some well-known languages

D.more complex than some well-known languages

请帮忙给出正确答案和分析,谢谢!

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