医患之间要做到真诚相处,最主要的是( )
现有一循环队列,其队头指针为front,队尾指针为rear;循环队列长度为N。其队内有效长度为( )(假设队头不存放数据)。
What is the teacher doing by saying this in terms of instruction?
“Now,did the questions help you understand the text better?"