单选题
In C language, (70) variables have to be defined outside of any function, this (71) actual storage for it.
单选题
A. internal B. export C. output D. external
单选题
A. locates B. allocates C. looks for D. finds
【正确答案】
B
【答案解析】[解析] 译文：C语言中，外部变量必须在所有函数体之外定义，并为之分配实际内存空间。