问题
单项选择题
In C language,（）are used to create variables and are grouped at the top of a program block.
A．declarations
B．dimensions
C．comments
D．descriptions
答案
参考答案：A
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In C language,（）are used to create variables and are grouped at the top of a program block.
A．declarations
B．dimensions
C．comments
D．descriptions
参考答案：A
