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【简答题】
令文法为E→T∣E+T∣E-TT→F∣T*F∣T/FF→（E）∣i（1）给出i+i*i、i*（i+i）的最左推导和最右推导；给出i+i+i、i+i*i和i-i-i的语法树。
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Task 1 Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, a...
A.
in his mind
B.
in his laboratory
C.
with microscope
D.
with telescopes