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题目内容
（运营管理）
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
·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
参考答案
