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Yes, Thanks! I replied already, not got yet? But I didn't see the post you mentioned on the Email.
laoyou
(老油)
(#131821@0)
Last Updated: 2001-7-14
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有兴趣的请帮忙做一数学题:抽屉里有5种不同颜色的袜子,至少取多少只才能保证有6双?
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