you can't use the type you know to deny another type you don't k

another type you don't know.

所有跟帖： 

• 人类历史上公认的神童很少。有太多的"神童"们最共 -苏北凤凰- ♂ (0 bytes) () 05/01/2016 postreply 09:40:51

• 最后也就是一般，或者中上。学数学和物理的人，对这个认识最深。 -苏北凤凰- ♂ (0 bytes) () 05/01/2016 postreply 09:43:41

• thought we were discussing child education, not how to get Nobel -blackmatter- ♀ (201 bytes) () 05/01/2016 postreply 09:59:59