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题目内容
（运营管理）
Leonardo da Vinci ( ).
·said that mawould fly ithe sky one day
·built a kind of machine which never flew
·drew many beautiful pictures of birds
·made designs for flying machine
·said that mawould fly ithe sky one day
·built a kind of machine which never flew
·drew many beautiful pictures of birds
·made designs for flying machine
参考答案
