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scp8708 发表于 2007-12-6 20:47

有哪位大哥帮做下三个题目嘛??

[img]http://p15.freep.cn/p.aspx?u=v20_p15_p_0712041210417981_0.jpg[/img]

比蜗牛快些 发表于 2007-12-18 20:46

1A,2A,3A
对吗?第3题我也没把握[img]http://bbs.bc-cn.net/images/smilies/default/tongue.gif[/img]

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