答案
1----5 ABCCC 6---10 DCBCD 11----15 CBBCC 16---20DBCBB
21---25 ABDBD 26---30 AADBD 31---35 BCBBD 36---40ABCBA
41----45 BDCB D 46---50DACBC 51-----55 BABBC 56-----60BBBDC
61----65 ACCBD 66-----70BDDAC 71-----75 CDBCB 76----80ADCCD
81----85 BADAB 86----90BDBAD 91----95 CBAAD 96---100ADBDA
