班级管理应该以学生为核心，建立学生为本的班级管理机制。（ ）
参考答案：对
125. The old man is quite able to take care of himself, he has seen the elephant. The underlined part means _____.
A．The old man knows the elephant.
B．The old man once saw the elephant.
C．The old man can take care of the elephant.
D．The old man is full of experience.
从键盘上输入两个字符串，分别保存在变量str1、str2中，则确定第二个字符串在第一个字符串中起始位置的函数是______。
A．Left
B．Mid
C．String
D．Instr
