- 问题详情:CanadaGeese(鹅)arelargeblueandwhitebirds.Whenautumncomes,theyhavetogotothesouthwheretheweatheriswarmer.ThewintersaresocoldinCanadathatthebirdswilldieiftheystaythere. Lastspring,BillLishmanfoundsixteenyoungCanadaGeeseonhisfarm.Theyhadlost...
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