Lennardo da Vinci was born on April 15,1452 in Italy .He ia

Lennardo da Vinci was born on April 15,1452 in Italy .He ia best known as an artist today .One of his famous paintings is called Mona Lisa .However ,Lennardo had many oter natural abilities .He was also a great inventor .Many of his inventions have become important in modern day life.
Although Lennardo hated war ,he invented many different machines used for war.His most special invention was the machine gun ,which was produced in war many years later.
By watching the way birds fly,Lennardo tried to find out the secret of flying .Among his sketches (素描) we can see many objects .We consider them as modern flying machines .
Lennardo spent many hours thinking about :how to make good use of time.He developed ideas for labor-saving machines like cutting machines .
Lennardo was a strange man .He didn't cut any meat ,which was very unusual in those times.He never published(发表) his ideas and specific discoveries .He usually used mirror writing ,which looks like writing in the mirror starting from the right side of the page and moving to the left .
We have very little of his work today .Lennardo finished only a few of his paintings .He left many unfinished because he thought they were not perfect .On one in his life time knew how great Lennardo was .We now believe ,however ,that he was one of the cleverest men the world has ever known.
76.According to the passage ,Lennardo is not only an artist but also ______.
A.An inventor B.An engineer C.A writer D.a musician
77._____was Lennardo's most special invention .
A.The mirror writing B.The cutting machine
C.The machine gun D.The flying machine
78.Lennardo was strange ,for example ,__________.
A.he didn't cut any vegetables B.he usually use mirror writing
C.he liked to publish his discoveries D.he enjoyed drawing flying machines
79.Lennardo invented some machines to _____
A.stop the war B.help painting pictures
C.watch the birds D.make good use of time
80.From the passage ,we can learn that Lennardo was very ______.
A.humorous B.acrious C.clever D.lonely

A C B D C