网络教学是随着计算机网络的蓬勃发展与广泛运用而兴起的，它是借助于现有的网络资源，进行教师与学生非面对面的教学手段,改系统主要用于网络教学-Network teaching is with the rapid development of computer networks and the extensive use of the rise, it is by means of existing network resources for teachers and students of non-