A frog was swimming in a pond after a rainstorm. He saw a brilliant rainbow across the sky. He was so excited that he couldn't help crying.

    "I have heard there is a cave filled with gold at the place where the rainbow ends. I will find the cave and be the richest frog in the world," said the frog.

    The frog swam to the edge of the pond as fast as he could. There he met another frog by accident.

    "Where are you rushing to?" asked the second frog.

    "I am rushing to the place where the rainbow ends," said the first frog.

    "There is a saying that there is a cave filled with gold and diamonds at that place," said the second frog.

    "Then come with me." said the first frog. "We will be the two richest frogs in the world."

    The two frogs jumped out of the pond and ran through the grassland. There they met another frog.

    "What's the hurry?" asked the third frog.

    "We are running to the place where the rainbow ends," said the two frogs.

    "I have been told there is a cave filled with gold, diamonds and pearls at that place," said the third frog.

    "Then come with us," said the two frogs. "We will be the three richest frogs in the world."

    The three frogs ran for miles. Finally they came to the end of the rainbow.

    There they saw a dark cave on the side of a hill.

    "Gold! Diamonds! Pearls!" cried the frogs. As they jumped into the cave, they found a snake lived inside.

    He was hungry and had been thinking about his dinner. He swallowed the three frogs quickly.

    Roald Dahl was one of the most successful writers of children's books. He sold millions of books all over the world. Many of his books have been made into films and videos. He is so famous that there is even a Roald Dahl Museum you can visit.

    Roald Dahl was born in 1916 in Wales, Britain. His father was rich but he died when Roald was very young. Roald and his mother lived a hard life. He had to leave school and went to Africa where he worked for an oil company.

    In 1939, Roald became a pilot, but he had a bad accident. It made him limp(瘸的)for the rest of his life. After this, Roald went to America where he wrote a story about his experience as a pilot. It was so good that it was put in a magazine.

    Roald married an American film star. They bought a house in England and had five children. From 1960 to 1965, ：Theo, one of his children, was hit by a taxi and was seriously hurt. Oliva, one of Roald's daughters, died of a strange illness. Soon after this, his wife also had a serious illness. It took her years to get completely better.

    Gradually Roald became more and more successful. He always did his writing in an old shed(棚)at the back of his house. He always sat in the same old armchair with a wooden board on his lap.

    "One of the nice things about being a writer," he once said, "is that all you need is what you've got in your head and a pencil and a bit of paper."

    In 1983 Roald won a big prize for his book The BFG. During his life, Roald wrote many famous books, such as Charlie and the Chocolate Factory, Matilda, Fantastic Mr Fox.

    After he died in 1990, Roald left money to help people with serious illness and those with problems with reading and writing.

    When I was about 12, I had an enemy, a girl who liked to point out my shortcomings (缺点). Sometimes she said I was thin. Sometimes she said I was lazy. Sometimes she said I wasn't a good student. Sometimes she said I talked too much, and so on. I tried to put up with (忍受) her as long as I could. At last, I became very angry. I ran to my father with tears in my eyes.

    He listened to me quietly, and then he asked, "Are the things she said true or not? Mary, didn't you ever wonder what you're really like? Go and make a list of everything she said and mark the points that are true. Pay no attention to the other things she said."

    I did as he told me and to my surprise, I discovered that about half the things were true.

    I brought the list back to my dad. He refused to take it. "That's just for you," he said. "You know better than anyone else the truth about yourself. When something said about you is true, you'll find it will be helpful to you. Don't shut your ears. Listen to them all, but hear the truth and do what you think is right."

    Many years have passed. The situation often appears in my mind. In our life we often meet with some trouble and we often go to someone and ask for advice. For some advice you will treasure (珍惜) all your life!