Who designed (设计) the first helicopter (直升飞机)? Who1 of the most famous pictures in the world? Who knew more about the human body than most2 ? There is an answer3 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't5 a helicopter with the things he had. But scientists say his idea would have worked.

But Leonardo6 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 became7 more famous. Sometimes he drew a hand ten different ways8 he was ready to paint. 

Many of Leonardo's wonderful paintings are still with9 today. You may know one of his most famous works the10 woman known as the Mona Lisa.