打字游戏，基于TC2.0环境

在开始界面按下任意键开始游戏，字母由上而下降落，在键盘上按下对应的字母，则显示正确的数字加一-Typing game based on TC2.0 environment

At the beginning of the interface press any key to start the game, the letter　top to bottom, press the corresponding letter on the keyboard, then show the correct number plus one