执行以下代码后，file.txt 文件的内容是？（ ） with open('file.txt', 'w') as f: f.write('First line\n') with open('file.txt', 'a') as f: f.write('Second line\n') with open('file.txt', 'r+') as f: f.seek(0) f.write('Replaced first line\n')
A： First line Second line
B： Replaced first line Second line
C： First line Replaced first line
D：Replaced first line
正确答案：B
试卷来源：202506 青少年软件编程等级考试Python六级真题