说明： 本程序实现下列功能：统计一段英文短文中出现的各种冠词的次数
单词之间的分隔符有：回车、空格、逗号、句号、叹号、问号 (the process to achieve the following functions : English essay section statistics have emerged in the number of articles between the word separator : Enter, space, comma, full stop, patent, a question mark)
