AE小程序设计的练打字的小游戏，字母随机从上往下落，键盘输入正确的字母，可计算正确次数，页面是基础形式的 AE10.0+VS2010-AE small program designed to practice typing game to the whereabouts of the letter at random from the keyboard to enter the correct letters, calculate the correct number of AE10.0+V