Who designed ( 设计) the first helicopter (直升飞机)? Who 1 of the most famous pictures in the world? Who knew more about the human body than most 2 ? There is an answer 3 all these questions --- Leonardo de Vinci (达芬奇). Leonardo may have been the greatest genius (天才) 4 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. Of course, he couldn’t 5 a helicopter with the things he had. But scientists say his idea would have worked. But Leonardo 6 an inventor. He was one of the greatest artists of his day. By the time he was twenty years old, he was called a master ( 大师) painter, and as he got older he became 7 more famous. Sometimes he drew a hand ten different ways 8 he was ready to paint. Many of Leonardo’s wonderful paintings are still with 9 today. You may know one of his most famous works the 10 woman known as the Mona Lisa.