【单选题】【消耗次数：1】
一个文法G是四元组，分别是：非终结符，终结符，开始符号，以及。
①
句子
②
句型
③
单词
④
产生式
参考答案：
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相关题目
【简答题】
非终结符有[填空1]。
【简答题】
文法G1(S)，它的产生式为：S→a|∧|(T),T→T,S|S。①消去G1的左递归。②写出非终结符的FIRST集与FOLLOW集。③构造它的分析表
【简答题】
终结符有[填空1]，它们由词法分析器提供。
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