一个算术测试小软件，用来训练小学生的算术能力。程序由3个类组成，其中Teacher类对象负责给出算术题目，并判断回答者的答案是否正确；ComputerFrame类对象负责为算术题目提供视图，比如用户可以通过ComputerFrame类对象提供的GUI界面看到题目，并通过该GUI界面给出题目的答案；MainClass是软件的主类。-A little math test software, used to train students in math ability. Program consists of three classes, which is responsible for Teacher class objects given arithmetic problems, and to determine whether respondents answer correctly　ComputerFrame class object is responsible for providing a view of arithmetic problem, such as the user can ComputerFrame class object provides a GUI interface to see topic and given the title by the GUI interface answer　MainClass is the main class of software.