你的意思是该教进位了？到底要不要他记住加减法口诀？

来源: 好吃狗于 2012-12-20 13:22:55 [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.