- 問題詳情:Acrowlivedinathickforestfilledwithmanybirds.Thecrowwasverycontentwithhiscarefreelifeuntilhesawaswanoneday.Theswanwasflyingoveralake.“Thisswanissowhite,”hethought,“andIamsoblack.Itmustbethehappiestbirdintheworld.”Hesharedhisthoughtswiththe...
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