Oncetherewasafamilyofsquirrelswholivedinalargeoaktree．T...
问题详情：Oncetherewasafamilyofsquirrelswholivedinalargeoaktree．Theyhadlivedthereformanygenerationsanditgavethemallthattheyneededto ,sotheyneverleftitsbranches．Thenthetreestartedtodieanditstopped...