Eight hundred years ago, aEnglishman( ).
·made a kind of flying machine
·tried to fly with wings made of chickefeather
·wanted to build a kind of balloon
·tried to fly oa large bird
出自：运营管理
提示：
每天可免费获取10次答案
收藏本站【zk.995w.com】，下次访问不迷路
本站试题总数:【10253414】个 (题库试题定时更新)
