题目内容
Language is a system of arbitrary, written signs which permit all the people in a given culture, or other people who have learned the system of that culture, to communicate or interact.
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Applied linguistics is the application of linguistic principles and theories to language teaching and learning.
When language is used to get information from others, it serves an informative function.
Prescriptive linguistics is more popular than descriptive linguistics, because it can tell us how to speak correct language.
要将138.10.0.0网络分成6个子网，则子网掩码应设为( )。
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