I also didn't figure it out although I am a lot younger than you

来源: 吴用先生 于 2009-02-07 11:43:48 [] [旧帖] [给我悄悄话] 阅读数 : (103 bytes)
回答: 正确答案是...... 由 吴用先生 于 2009-02-07 10:44:35

so age doesn't help here. But one who can figure it out independently should be pretty smart.

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