题目内容
Borrowing occurs when one language takes a word or morpheme from another language and adds it to its lexicon.
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A grammatically well-formed sentence is always semantically well-formed.
An official language is in fact a national language.
Major lexical categories are closed categories because the number of lexical items in these categories is fixed and no new members are allowed for.
Stress is a suprasegmental feature that is exclusively used with words, not with sentences.
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