回复：求教：小学5年级算数题目求证

if this is too hard, then your kids should not look
for come careers which need to use math. My son could do
this in his first grade.

所有跟帖： 

• 汗。 -coorslight969- ♂ (42 bytes) () 09/12/2009 postreply 21:36:26

• 研究生算什么？ -botong- ♂ (14 bytes) () 09/18/2009 postreply 22:04:34