my son makes mistakes in 基本四则运算. But he made

the high school team. and kids good at 基本四则运算 couldn't make the team. he never got 100% right because he make mistake in 基本四则运算.

所有跟帖： 

• 一道物理题，化学题，明明式子摆对了，简单的计算算错了， -wine- ♀ (60 bytes) () 09/20/2007 postreply 05:00:33

• your son is lucky, but do you know how many of the average joes -wine- ♀ (124 bytes) () 09/20/2007 postreply 05:12:53