- 問題詳情: Fromoldtimes,crows(烏鴉)havebeenfamousfortheircleverness.Theyusetools,workoutproblems,andevenenjoyplaying.Scientistshavestudiedcarefullyhowcrowsgoabouttheseactivities. Tomaketools,crowscutoffleaveswiththeir“mouths”,shapethem,andusethemtolookforb...
- 4799