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【单选题】
下列描述中正确的是( )。
A.
在C语言预处理是指完成宏替换和文件包含指定的文件的调用
B.
预处理指令只能位于C源程序文件的首部
C.
预处理命令可以放在程序中的任何位置
D.
预处理命令结尾需要加分号
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