my2009的个人空间

my2009： Math is a poem

Math is a poem.It is very beautiful .And if you really love it ,it will love you .(please write this poem with your own language . That... 全文

2009-01-20 20:31 来自版块 - 

my2009： 化学方程式 (very difficult,which can exam your IQ)

请配平下列方程式（一定要写清思考的思路啊！！！万分感谢）CuSo4+FeS2+H2O=Cu2S+FeSo4+H2So4

2009-01-20 20:24 来自版块 -