For some reason

I should be lucky or not, but why not? I have many questions and have no answer

Monday, August 25, 2008

算术练习题

这是一个算术练习题的自动生成站点,可以自动生成加减法的连续算术题,给小家伙们练练一下。
http://www.hrpland.com/calc/

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