Pre-calculous is the pre-study for calculous. It contains more illustrations and graph instead of complicated formulas, helping you to quickly understand the concept from graphing to tacking proofs.<img alt="" src="/FCKeditor/editor/images/smiley/msn/regular_smile.gif" />
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September 7, 2008
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wo ke yi jiao ni zhongwen.
And you can teach me English.
I am a graduated student, I work in beijing, trading stocks in Toronto Stock Exchange.
I think we can make friends.