def AddApple(fruit=None): if fruit is None: fruit=[] fruit.append('Apple') return fruit AddApple() AddApple() print(AddApple(['Pear'])) 以上程序段运行的结果是？（ ）
A：['Pear','Apple']
B：['Pear','Apple','Apple']
C：['Apple','Pear','Apple','Apple']
D：['Apple']
正确答案：A
试卷来源：202209 青少年软件编程等级考试Python四级真题