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      A month ago, the Greens went along the coast and finally got to Daytona beach (代托纳海滩) to spend their holiday. It was 200 miles away from their home in Florida. They took their pet cat with them. The cat got frightened because of some noise during the holiday. Then it ran away. The Greens looked for their pet for a long time,but they didn't find it. They had to leave for home. In fact, the cat traveled for a long time and got back to Florida after it was lost.

     Luckily, a woman called Sarah in Florida found the cat in her garden.The cat was too weak to make a sound, lying there only. When the pet doctor examined the cat and found a chip (芯片) inside the cat's body. And there was all kinds of information about the cat in the chip. Sarah knew that the Greens were the owner of the cat. Sarah took it home and looked after it quite well. The cat became better after a few days.

     Sarah wanted to sent the cat back to the Greens. However, how did the cat get home far away from 200 miles? Maybe only the cat itself knew it.

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 and used in war many years later.

    By watching the way birds fly, Leonardo tried to find out the secret of flying. Among his sketch (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.

    Millie is a little girl who is at the age of nine. She is a pupil in a primary school. She works hard at her subjects. In class, she takes an active part in all kinds of activities. She looks smarter than her classmates.

    One day, she was doing her homework after supper as usual. Her father was not in. Her mother was taking a shower in the bathroom. After she finished her homework, Millie asked her mother to check it for her, but her mother didn't answer her. A few minutes later, her mother was still in the bathroom. Millie felt strange. She knocked at the door. But her mother had no answer. She pushed the door open and found her mother lying on the floor. At the same time, she smelled something terrible. It was the gas. She quickly opened the window, turned off the gas and called 120 and 110 for help. Soon some doctors and policemen came and sent her mother to the nearest hospital. Her mother was saved at last.

    Why did the little girl know how to do that? That was because she had learned how to save herself and others in danger in school.

    My parents told me we were going camping during winter vacation. Camping! They are always trying to get me outside more. It seems like my mom is always saying, "Brian, turn off the computer!" or "Brian, put down your phone and talk to us!" They don't understand that I'm in the zone when I'm using a keyboard, so of course I don't want to stop.

    We drove for an hour to Everglades National Park. As soon as we got there, I couldn't get a signal(信号) for my phone. Suddenly, I was facing three days of no contact with the outside world. My mom tried to tell me I'd like it, "You'll be able to look around more when you're not staring at a screen."

    We took a hike with a ranger(护林者) in the afternoon. He explained a lot to us about the Everglades. At first, I couldn't care less, but after a while I started listening. By the end of the hike, I realized there was more action going on in the park than in most video games.

    We did a lot of walking and that night I was really tired. Even so, I woke up in the midnight, and I was scared at first because of some strange sounds. But then I realized it was the barred owl that the ranger had described. It sounded like it was calling out "Who cooks for you? Who cooks for you?" Then I was not afraid anymore and went back to sleep.

    The next two days we did a lot more exploring. I saw that all the land and water and animals were connected in the Everglades. Small fish eat mosquito eggs; large fish eat those smaller fish; and alligators eat the large fish. If you got rid of(除掉) the mosquitoes, you might lose some of the other animals higher up the food chain too.

    After we left, we talked in the car about the Everglades. Right in the middle of our discussion, I heard a familiar sound from my phone. My friend Jeff was sending me a message. I reached for my phone, then put it back down. "Aren't you going to reply?" asked Mom.

    "I will in a little while," I said. My dad and mom looked at each other and just smiled.

    My name is Tom. I'm a boy from England. I have healthy food every day.

    I often have bread and milk for breakfast at home. They are healthy. I love hamburgers, but I seldom(极少) eat them. They are not good for us. I eat my lunch at school. I eat rice with meat and vegetables. After it, I eat an apple. I like apples very much. For dinner, my mother cooks soup, fish and vegetables for us. I like vegetables because they can make me stay healthy.

    Before I go to bed, I drink a cup of milk. It's good for sleep(睡眠). I also drink lots of water in the day. It's very important for me. There are few calories(几乎没有卡路里) in water. So I'm not fat now.