Hello, everyone. Here is something important for everyone going to London next month. As you know, you are going to stay with a family for two weeks. Now, the most important thing is money. You should take about $530 with you. I think it will be enough for everyone. Then, when you arrive, your new family will meet you. You must remember to wear a red shirt. So the family will find you easily. They've been told that you all wear red shirts. You'll also need to take with you 4 photos of yourself, and of course, it's very important that you take the school letter while you're there. If you have any problems, you can call Leech School office. I'll give you the office phone number now：it's 580—4436 and the person to ask for is Mrs. Belcher. She's in the office from nine o'clock in the morning until five in the afternoon every day. OK. That's everything. Have a good journey!

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    Mr Turner was a famous writer. He was born in New York in a rich family on 13th September, 1941. His father came from England. He was a worker. His mother came from Australia and she worked as a doctor.

    When Mr Turner was seven, he began to go to school. He usually rode his bicycle to school. At school, he first wanted to be a manager. But at the age of fifteen, he decided to be a writer. In 1965, he wrote his first book and in 1967 he wrote his second book. After that he was famous all over America. At the age of thirty, Mr Turner married a woman from England. 然后他们去了英国并住在那里居住。 They had four children. Mr Turner died on 15th July, 2008.

    While you are at the bookstore, you may be faced with a difficult decision: e­ books or paper books? Each one has its advantages and disadvantages. Making the best decision depends on a number of factors(因素).

    An e­ reader can carry a whole library wherever you go, which is great for travelers or those who always want a choice of reading materials. Although e­ readers are convenient, high levels of screen brightness from an electronic device(电子设备) can cause eye problems. A study in the Information Science Research found that young people preferred e­ readers, like smart phones or iPads. That's why most teenagers are short­sighted.

    Many book lovers prefer paper books and value the feeling of them. Paper books are very well designed, they look and smell good, and they carry with them a more human touch. Avid(热衷的) readers prefer reading on paper .Perhaps this is their choice because paper books give them a sense of ownership .It is reported that reading on paper rather than an electronic screen is better for memory and focus .But paper books are heavy and they are not convenient to carry.

    Which is your decision, an e ­book or a paper book?

    Is sleep important for children? A new study says yes.

    In America, most people don't get enough sleep. Children aged 5 to 12 are advised to sleep 10 to 11 hours every night, but most of them can't sleep that long. A study found that about 41 million American workers got less than six hours of sleep every night. Scientists worry that parents are passing their poor sleeping habits down to their children.

    In the study, Reut Gruber and some other scientists either added or reduced(减少) one hour of sleep for healthy children aged 7 to 11. They watched the children for five nights. They wanted to know if the amount of sleep can affect(影响) a child's behavior.

    Before the study began, students were asked to sleep the same amount of hours as usual. Their teachers were asked to record their behavior. After changing the children's sleep for five nights, the teachers had to record again. According to the two records, scientists found that those who slept one hour less behaved worse than those who slept one hour more. Students with less sleep were more likely(可能的) to feel sad and had more problems paying attention.

    The scientists chose to study children in their homes instead of in a laboratory, because they wanted to find out how everyday changes might affect children's behavior at school. "In the study, nobody became a talent, and nobody became crazy. But small changes in children can really make a big difference," says Gruber.

    On 19th September 1783, Pilatre De Rozier, a scientist, sent the first hot air balloon. The passengers were three animals and the balloon stayed in the air for about 15 minutes before hitting back to the ground.

    The first manned(载人的) flight was about 2 months later, with a balloon made by 2 French brothers. The balloon flew for a period of 20 minutes.

    Sailing through the sky in the balloon, high above buildings and trees, you can't feel or hear the wind because you're traveling in the same direction and at the same speed as it is.

    A hot air balloon has three main parts: the balloon, called an envelope; a basket, where passengers ride; and a burner system, which supplies the hot air.

    Most balloon envelopes are made of strong, lightweight nylon(尼龙). They are different in size and shape, but they have to be really, really big to lift even one person. Most weigh more than an adult man.

    The basket is usually made of wicker(柳条), which is strong but not too hard. It needs to bend a bit for a soft landing, just like a good jumper bends her legs instead of keeping them straight when she lands.

    The hot air balloon works on the theory that hot air rises faster than cooler air. When the burner system is turned on, it makes a noisy sound, but once the balloon is flying, the burner can be turned off. The air in the envelope will then cool, and the balloon will slowly go down unless the pilot starts the burner system again.

    To control a hot air balloon, a pilot adds hot air to it to go up or lets the air out to go down until he finds a wind blowing in the direction he wants to fly. But no matter which way the wind blows, the passengers have an amazing bird's-eye view of the world.