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Leonardo da Vinci was born on April 15, 1452 in Italy. He is best known as an artist today. One of his famous paintings is called Mona Lisa. However, Leonardo had many other natural abilities. He was also a great inventor. Many of his inventions have become important in modern day life.

Although Leonardo hated war, he invented many different machines used for war. His most special invention was the machine gun, which was produced and used in war many years later.

      By watching the way birds fly, Leonardo tried to find out the secret of flying. Among his sketches(素描)we can see several objects. We consider them as modern flying machines.

      Leonardo spent many hours thinking about how to make good use of time. He developed ideas for labor-saving machines like cutting machines.

Leonardo was a strange man. He didn't eat any meat, which was very unusual in those times. He never published (发表) his ideas and scientific discoveries. He usually used mirror writing, which looks like writing in a mirror, starting from the right side of the page and moving to the left.

      We have very little of his work today. Leonardo finished only a few of his paintings. He left many unfinished because he thought they were not perfect. No one in his life time knew how great Leonardo was. We now believe, however, that he was one of the cleverest men the world has ever known.

①小剧场正上演昆曲《游园惊梦》，云台上那青衣眼神流转，碎步生莲，才一开腔便先声夺人，楼上楼下的看客皆轰然叫好。

②饶宗颐，这位被称为当代“最后的通儒”的国学大师，与季羡林先生并称“北季南饶”，他拥有百科全书式的深厚学养，令后辈学者难以望其项背。

③不少省市片面追求GDP，无节制地开采、出口稀土等等资源，这种行为无异于为渊驱鱼，为丛驱雀，长此以往，稀有资源将消耗殆尽。

④随着经济的发展和住房条件的改善，两门相对却不相往来、以邻为壑的邻里相处之道早已引发社会学家的关注和思考。

⑤国家人社部最近出台了支持鼓励事业单位专业技术人员创新创业的指导意见，这一政策在大众自主创业蔚然成风的今天，为就业发展注入新活力。

⑥冯友兰教授回忆说，蔡元培校长给他留下的最深刻记忆就是他洒脱豁达的胸襟，光风霁月的气象，这种人格魅力最令人慨叹不已。