局内光缆的终端方式有（）、（）、（）三种。
参考答案：T-BOX盒直接终端方式；ODF架终端方式；终端盒成端方式
It is difficult for a teacher to give attention to children in a large class．We should reform the situation in order to meet each child’s needs．
A．private
B．personal
C．individual
D．single
丁字尺有何用途？如何正确使用？
