题目内容

The secret of the success of The Pilgrim’s Progress is probably simple. Its predominant metaphor --- --- is simple and familiar.

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One of the most remarkable passages is that in whichand the persecution of Christian and his friend Faithful are described.

1.字符串的第1个索引是_。

A. -1
B. 1
C. 0
D. 字符串长度-1

2.字符串的最后1个索引是___。

A. 1
B. 99
C. 0
D. 字符串长度-1

3.如果你尝试使用了超出字符串范围的索引,会发生__。

A. a.产生 ValueError异常
B. b.产生 IndexError异常
C. c.该字符串会被删除,该程序将继续运行
D. d.什么也不发生-无效索引将被忽略