What are the three major functions ofcontext?

What are the three major functions ofcontext?
【正确答案】：The three major functions of context are elimination of ambiguity, indication of referents and provision of clues for inferring word-meaning.
【题目解析】：语境对于词语的意义确定起着很重要的作用，语境的三个主要作用是消除歧义、限定所指和提供猜测词义所需要的线索。