阅读下面的短文,然后根据短文内容回答问题。

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 daily life.

Although Leonardo 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.

Leonardo tried to find out the secret of flying, he watched the way birds fly. Among his sketches(素描) we can see many 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 his ideas and discoveries. He usually used mirror writing, which look like writing in the mirror starting from the right side of page and moving to the left.

We have very few of his works today. Leonardo finished only a few of his painting. 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 that the world has ever known.

1.What was Leonardo da Vinci?

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2.Did Leonardo invent any machines used for war?

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3.How did Leonardo try to find out the secret of flying?

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4.Why didn't Leonardo finish all his works?

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5.How do people nowadays like Leonardo?

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Jack's love for birds started when he made his first birdfeeder about six years ago. He filled the feeder with seeds (种子), put it in his backyard and then _____ started coming. He got really _____ in birds as more came. Then he joined a local society. As he realized that more and more birds were dying very _____, he wanted to try his best to help them.

Besides what he has done, he has his own group called Protecting Our Birds. He does _____ about birds, run a website to teach people about birds and how to help them, and _____ boxes for birds. Not long ago, he found that the bluebirds were nesting(做窝)in the dead trees which were often cut down, _____ he began to make bluebird boxes for the birds in order to save them. Now he wants to use these boxes to _____ the dead trees. He hangs these boxes up in trees and takes _____ down every week to see if the birds are nesting in them. He also writes articles, hoping that more people will _____ protecting natural ecosystems(生态系统). “Researching birds is ______ to protecting birds,” Jack says. “In order to protect birds, we have to learn and really know about the birds.”

1.A.bees B.birds C.people D.scientists

2.A.nervous B.weak C.bored D.interested

3.A.peacefully B.safely C.quickly D.sadly

4.A.practice B.business C.instruction D.research

5.A.builds B.breaks C.lifts D.pushes

6.A.so B.but C.though D.because

7.A.take good care of B.take the place of C.catch up with D.come up with

8.A.it B.this C.these D.them

9.A.wait for B.send for C.join in D.hand in

10.A.simple B.crazy C.important D.fresh

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