介绍:
这是今天QQ群上传的作业文本配套的录音。欢姐邀请你的加入，每天一起做作业吧！
We are obliged to them because some of these languages have since vanished, as the peoples who spoke them died out or became assimilated and lost their native languages.
我是海天考研的欢姐。海天考研是中国最大的考研培训机构。23年老字号。
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