There is a popular belief that goldfish only have a three-second memory. But a 15-year-old schoolboy from Adelaide has just finished an experiment（实验）to tell us that it is not true. He shows everybody that the goldfish is smarter than we think.

    “I don't believe that they had a three-second memory because animals need their memory, so they build up over time a knowledge of where the food is,” said Roy Stokes, a student at the Australian Science and Mathematics School.

    He did the experiment in small tank（鱼缸）of goldfish. “I decided to get a bit of red Logo and just feed them next to that. Every day I'd put it in and spread food around it.” He said.

    “At first they were a bit scared of it, but by the end of the three weeks, they were actually almost coming before I put the food in.”

    After leaving the fish alone for a week, Rory placed the red Logo block in the tank again.

    “They remembered perfectly well,” he said.

    “They actually had a time faster than the average of the three feeds before I left.”

    The goldfish showed that not only could they store information, they also had the ability to get it back as a later date.

    Culum Brown, a research fellow at Sydney's Macquarie University, has studied fish behavior for more than ten years.

    He says his studies of Australian native fish show fish were intelligent creatures that know how to avoid enemies and catch food like any other animal.

    “The thing that I really liked about Rory's experiment is he not only got that classical conditioning going but the fact that he could get them next just to that specific coloured market. I thought it was really good.” He said.

    Waste can be seen everywhere in the school. Some students ask for more food than they can finish and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don't agree with them.

    Waste can bring a lot of problems. Although China is rich in some resources, we are short of others, such as fresh water. It is reported that we will have no coal or oil to use in 100 years. Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.

    In our everyday life, we can do many things to prevent waste from happening. For example, turn off the water taps when we finish washing, turn off the lights when we leave the classroom and try not to order more food than we need. Little by little, everything will be changed. Waste can be stopped one day if we do our best to form the habit of saving.

One day, Tony met his friend, Alan, in the street. Tony was quite rich, but Alan was poor, The two boys walked along the street together. 

They talked about many things. Tony liked to listen to music and he told Alan about some new songs. Alan liked reading, and he told Tony about some new books. 

They had the same friends, and they talked about these, too. Then Tony remembered something. "I lent you ten dollars last week. "he said. "Can you give it back to me?"

"I'm very sorry, Tony. " Alan said. "I forgot about it. "

 He thought about this money for a minute. 

 Then he said, "I haven't got any money with me today. I'll pay you back tomorrow. "

"All right. "Tony said, "I can wait another day. "

 At that moment a man ran up. He had a knife in his hand. Alan and Tony were afraid, 

"Give me your money. " he said to Tony. 

 Tony took out his wallet(钱包)and gave it to the thief(贼，小偷). 

 The thief took out the money and threw the wallet on to the ground. 

"Now you give me your money. " he said to Alan. 

Alan thought quickly. He took out his wallet, but he did not give it to the thief. He gave it to Tony and said, "I will return(欠)you some money, Tony. Here it is. "

The Tiaohua Festival is a main festival of the Miao people in Anshun City in Guizhou Province. Each year，the Tiaohua Festival attracts international tourists from all over the world. In 2008，it was included into the second batch of National Intangible Cultural Heritage List(第二批国家级非物质文化遗产名录). It is usually celebrated in the first lunar month every year. 

To decide the exact date of the festival，organizers have to think about many things，like lucky animal days(e. g. the tiger and dragon days are powerful，but the snake and pig days need to be avoided at all costs) and lucky numbers(e. g. "8" means rich but "4" means death). Organizers also need to make sure the date doesn't fall on the festival days of other communities. In this way，people from nearby villages can take part in the festival. 

Singing and dancing are the main activities of the Tiaohua Festival. During the festival，the Miao people wear their traditional clothes and silver accessories(配饰). The most important part of the festival is the chance for young people to meet possible marriage partners—men play a musical instrument and women dance to the music in the flower area. If a man plays well，listeners will cheer for him and he can win a woman's admiration. Then they may get married if everything goes well. Other activities include competitions of climbing a flower­decorated pole and the martial art. 

Helen Keller was a writer, lecturer, and great educator. She was born in 1880. She lost her sight and hearing at the age of nineteen months because of an illness now believed to be scarlet fever (猩红热). Before her illness, Helen was a wise and happy girl. After she lost her ability of seeing and hearing, she became difficult and wild. She often shouted and cried. In 1887, a young teacher named Anne Sullivan began to help Helen.

Through Sullivan's careful instruction, the little girl learnt to understand and communicate with the world around her. She  ▲  Sullivan to read and write in braille (盲文). She could understand only by touch. As Helen grew older, she made good progress and learnt to read more. She also learnt to write and even speak. When Helen studied in the university, Anne sat beside her. She listened to the professors' words and spelt them on Helen's hands. 

 After Helen finished university, she visited a lot of countries. She spoke about her life. She was famous for her courage and hard work. She tried her best to help other people who were blind or deaf. Her first book The Story of My Lifewas printed in many languages. And her other four books were published later on.

We are healthy. We can know and think what's going on around us. While Helen was blind and deaf, she never let her blindness and deafness prevent (阻止) her from achieving success. And this gives me hope for life. 

It's a lovely day. Sarah is going to have a picnic in the park with her friends. She has prepared a lot of food:meat and some vegetables. All are the daily food in our life. But do you know where some of them came from? Let me tell you. 

Chickens were once wild birds in the forests of Asia. About 3, 400 years ago, humans began to keep chickens. However, the birds were small and their meat was too hard to eat. So people only kept chickens to fight for sport. 

The seeds of the cocoa tree can be made into chocolate. But 2, 000 years ago, people in Central America only drank chocolate. In Europe, chocolate drinks started to get popular in the 1500s when sugar was added. 

At first, people were afraid of eating tomatoes because they thought tomatoes were poisonous plants. One day, a brave man ate the first tomato. People were surprised that he didn't die. They tried the tomatoes and found that they tasted nice. Soon tomatoes became one of the best vegetables in the market. 

Long before ice cream, water ices were popular all over Asia. During the Tang Dynasty, some people made ice cream from milk. Later, travelers took this idea back to Europe. Soon, many people wanted to try it and it became popular everywhere.