Fire was discovered many thousands of years ago. The first time humans saw fire was probably when a tree was destroyed by lightning(闪电). Humans soon learned how to make fire. They probably made the first fire by rubbing (摩擦)two sticks together.

 Fire was very important to humans. They needed to keep warm at night. They used fire to cook food. They used fire to keep enemies and wild animals away. In some parts of the world fire was used to send messages. The Indians in America, for example, used fire to make smoke as a message. In some other countries people lit fires to warn their friends of danger.

Fire was also used to give light. Before the invention of the oil lamp(灯), humans burned sticks to get light. 

One man even used fire to tell the time. He invented a candle clock. He made a candle that took exactly twelve hours to burn. Then he marked this candle in twelve equal(相等的) parts. He lit the candle and could tell the time by counting the number of parts left of the burning candle. But the candle clock did not always work well. If there was a wind blowing on the candle, it burned too quickly.

    Who designed the first helicopter (直升机)? Who painted some of the most famous pictures in the world? Who knew more about the human body than most (1)______ of his time? (2)____________

   (3)____________ 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 build a helicopter with the things he had. But scientists say that his idea would have worked.

   (4)___________ He was one of the greatest artists of his day. By the time he was twenty years old, he had been called a master (大师) painter, and as he got older he became even more famous. Sometimes he drew a hand ten different ways before he was ready to paint.

   (5)___________ You may know one of his famous works, the (6)______ (smile) woman (7)______ (know) as the Mona Lisa.

    In the future, machines will be improved and do more and more work for man. Few people have to work for long hours{#blank#}1{#/blank#} How will he use this leisure in the world of tomorrow?

    Certainly he will still need holidays.

    In the future, the computer will help people to find the right place. The computer will ask them questions which they will answer by pressing a button.{#blank#}2{#/blank#} then the computer will tell them where to find the place they want for holiday.{#blank#}3{#/blank#} It will also help people to use their leisure time well. There will be more programmes on how to make and how to do things.

    In the future, people will certainly have to do less work{#blank#}4{#/blank#} This means that the rest of the time will be mostly leisure time.

    Some scientists say that man of the future will be able to get enough pleasure and enjoyment on his own without going anywhere. According to other scientists{#blank#}5{#/blank#} The cap will make him see, feel and hear all kinds of enjoyable things.

根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使知道文意思通顺，内容完整。

A. Man will have more time for leisure.

B. a man will put on a small cap.

C. It'll also show them pictures and they will say which ones they like

D. Machines will take more and more work from man.

E. TV will be used more in education.

    Once a king got two nice falcons(猎鹰) from his son. He had never seen such beautiful falcons before. He loved them so much and he ordered the best falconer to train them to fly.

    After several months, the king came to see how the training was going on. He found that one falcon had already been able to fly high in the sky, while the other one was staying on the branch(树枝) of a tree quietly without moving.

    The king called all his falconers together and ordered them to try every way they could to make it fly. But none of them succeeded. One day, while the king was taking a walk in the forest, an idea came to his mind. He decided to find someone who knew the natural environment well to solve the problem. Then he sent for a farmer who lived in the forest into his palace to train it at once.

    The next morning, the king saw the other falcon flying above in the sky freely. "It is unbelievable!" shouted the king. "How could you make it happen?"

    The farmer replied, "It's very easy. I just cut off the branch where the falcon rested."

    It is always the same to humans. We all have "two flying wings in our hearts as well, but we often seem not to notice them and stay where we feel safe and comfortable. We won't realize we can fly so high and freely until the "branch" we are resting on breaks.

    When you wave to a friend, you are using body language. When you smile at someone, you mean to be friendly. When you put one finger in front of your mouth, you mean "be quiet". Yet, people in different countries may use different body languages.

    Once, an Englishman was in Italy. He could speak little Italian. One day while he was walking in the street, he felt hungry and went into a restaurant. When the waiter came, the Englishman opened his mouth, put his fingers into it and took them out again and moved his lips. In this way, he meant to say, "Bring me something to eat." But the waiter brought him a lot of things to drink, first tea, then coffee, then milk, but no food.

    The Englishman was sorry that he was not able to tell the waiter he was hungry. He was ready to leave the restaurant when another man came in. The man put his hands on his stomach, and this body language was good enough for the waiter. In a few minutes, the waiter brought him a large plate of bread and meat.

    Finally the Englishman had his meal in the same way.