5 What is the passage mainly about?
A kind of classrooms completely different from traditional ones.
B. Useful practice courses in restaurants and hotels.
C. New teaching methods used by the students of restaurant and hotel businesses.
D. College students work as restaurant and hotel staff.
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将递归算法转换为非递归算法时，通常需要使用________。
A. 栈
B. 队列
C. 链表
D. 树
如下程序中f(8)的值是________。int f(int n){if(n==1)return 1;elseif(n==2)return 2;elsereturn f(n-1)+f(n-2);}
A. 13
B. 21
C. 55
D. 34
定义间接递归函数时会使用函数原型。
A. 对
B. 错
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