题目内容

设有文法： W→AO A→A0|W1|0 将它改写后消除左递归后的文法是（）。

A. W→A0
A→0A'
A'→0A'|01A'|ε
B. W→A0
A→A0 |A01| 0
C. W→A0
A→0A'
A→0A'|01A'
D. 以上均不对

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