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2 z. x4 b( y. U% C7 C( T
你好聰明作者: sc7086 時間: 2012-4-28 09:32 AM
You are so smart!作者: cyberryu 時間: 2012-4-29 12:47 AM
heard this before, very difficult for people who studied computer science, but very easy for people who studied chemistry. (we threw this question around at college)