利用Visual Basic编写的小程序，用来测试记忆的，在程序运行后，最先出现3个英文字母，根据记忆，将它填入表格，然后依次4个字母，5个字母-The use of Visual Basic procedures for the preparation of a small, used to test memory, the program runs, the first three letters of the alphabet appears, according to memory, w