内置函数是由编程语言提供的，使用它的时候不需要包含其代码。Built-in functions are provided by programming languages, and do not ne

内置函数是由编程语言提供的，使用它的时候不需要包含其代码。Built-in functions are provided by programming languages, and do not need to contain their code when using them.

A.正确

B.错误

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