第3题
A、a b c d # S A A → d B B → aA B → bS B → c
B、a b c d # S S→ BA A A→ BS A → d B B → aA B → bS B → c
C、a b c d # S S → BA S→ BA A A → BS A→ BS A → d B B → aA B → bS B → c
D、a b c d # S S → BA S → BA S→ BA A A → BS A → BS A→ BS A → d B B → aA B → bS B → c
第7题
A、def read(): f=open("test.txt","rt") while true: s=f.read() if s!="": print(s) else: break f.close()
B、def read(): f=open("test.txt","rt") s=f.readline() st=s.splist(" ") for s in st: print(s) f.close()
C、def read(): f=open("test.txt","rt") st=f.readlines() for s in st: print(s) f.close()
D、def read(): f=open("test.txt","rt") while true: s=f.readline() if s!="": print(s) else: break f.close()
第9题
A、different thinking patterns and culture
B、rise of China as an influential economic force
C、Chinese interference
D、word-for-word translation from online dictionary
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