说明：  贪吃蛇游戏设计与实现，主要分为以下二个模块：游戏主界面模块和游戏控制模块。在此只实现游戏的游戏主界面模块、游戏控制模块。并且只是实现移动速度、暂停、重新开始等功能。
(Snake game design and implementation, mainly divided into the following two modules: the main game interface module and the game control module. In this game the main game interface module, the game control module. And only mobile speed, Pause, Resume, and other functions.)