Who designed（设计）the first helicopter（直升飞机）？Who painted one of the most famous pictures in the world？（56） 　　There is an answer to all these questions﹣Leonardo de Vinci．

Leonardo may have been the greatest genius（天才）people have ever known．He lived in Italy around the year 1500，but many of his inventions seem modern to us today．For example，one of his notebooks has drawings of a helicopter．（57） 　　But scientists say his idea would have worked．

Leonardo wasn't just an inventor．（58） 　　By the time he was twenty years old，he was called a master painter，and as he got older he became even more famous．Sometimes he drew a hand in ten different ways before he was ready to paint．

（59） 　　You may know one of his most famous works﹣the smiling woman known as the Mona Lisa．

A．Of course，he couldn't build a helicopter with the things he had． B．Many of Leonardo's wonderful paintings are still with us today． C．Who knew more about the human body than most doctors？ D．He was one of the greatest artists of his day．

60．What is not mentioned in the passage？ 　　

A．	Leonardo is a famous inventor．
B．	Leonardo knew more about the human body．
C．	Leonardo drew the helicopter．
D．	Leonardo painted the most famous painting in the world．