几个6之间的差是1，3，6，10，15，21，27，28

来源: ^oo^ 于 2018-02-10 08:39:49 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.