It was not yet eleven o'clock when a boat crossed the river with a single passenger who was lucky to be able to cross the river at that unusual hour by promising to pay some extra money. While the youth stood in the light place searching his pockets for money, the boatman lifted a lamp, with the help of which, together with the newly risen moon, he took a careful look at the stranger. He was a young man of about eighteen years, clearly country brought up, and was, as it seemed, on his first visit to town. He was wearing a rough grey coat, which was in good shape, and which had seen many winters before this one. The jacket under his coat was made of leather and trousers fitted tightly to a pair of strong legs; his stockings of blue yarn(毛绒) must have been the work of a mother or sister, and on his head was a hat, which in its better days had perhaps protected the grayer head of the young man's father. In his left hand was a walking stick, and on his strong shoulders hung a leather bag. Brown hair, well-shaped features, bright, cheerful eyes were nature's gifts. The youth, whose name was Robin, paid the boatman, and then walked forward into the town with a light step, as if he had not already traveled more than thirty miles that day. As he walked, he looked around as eagerly as if he were entering London or New York instead of the little city in New England.

    On a clear night, you can see a sky paced with stars. But you can't see planets orbiting any of these stars, even with the strongest Earth—based telescopes. Astronomers reported that they discovered seven Earth—sized planets orbiting a nearby star called TRAPPIST – 1 in February. They had to rely on indirect evidence to tell them that the planets are there. By doing some math, they figured out the number of planets and the distance of their orbits.

    TRAPPIST – 1 is a red dwarf （红矮星）, much smaller than our sun, but larger than Jupiter (木星). If the sun were the size of a basketball, TRAPPIST – 1would be the size of a gold ball. This star is one of our closest neighbors, just like the moon to the earth in space.

    When astronomers using Earth-based telescopes to study TRAPPIST – 1,they noticed that every once in a while, it became slightly dim（昏暗）. They decided that a planet must be passing in front of the star, blocking part of the light. This dimming would come and go as the planet orbited the star, passing alternately (交替地) behind and in front of the star regularly.

    By making careful observations, astronomers expected to get a rough idea of the planet's size from the pattern of dimming light. But the light level changed often and not at evenly spaced (均匀间隔的) times. The astronomers had to conclude they were looking at more than one planet! To get additional data, NASA's spritzer Space Telescope measured TRAPPIST –1's brightness nearly continuously for 20 days, catching 34 crossings of planets in front of the star. Sorting through the mess of data, the astronomers found that the innermost planet completes its orbit in 1.5 Earth days, while the outermost planet takes 20 days. Once you know how long it takes each planet to complete an orbit, you can work out how far it is from the star compared with the other planets.

    The TRAPPIST – 1 planets are not alone. So far, astronomers have found more than 3,400 planets that orbit other stars.

    Australian electronics and homewares retailers are preparing for the invasion (涌入) of American giant Amazon, but some have decided to take the fight up to the online-based store when it comes to local shores.

    Last week, Amazon confirmed its rapid Australia expansion by announcing that it was searching for a site to build its “fulfillment center”—a large warehouse(仓库)for storing and shipping goods purchased online—but local retailer, including one of Harvey Norman's founders Gerry Harvey, have said they will make it hard for Amazon to succeed in Australia.

    Harvey Norman sells electronics, furniture and bedding—all markets in which Amazon hopes to hold a stake, but Harvey has said that he will happily go toe-to-toe with the American behemoth to hold his ground in the Australian market.

    “In America and other parts of the world, they have just demolished (彻底打败) other retailers, no question about that, and they send a lot of retailers broke,” Harvey told News Corp on Monday. “There is no question they have one ambition and like Attila the Hun, or Alexander the Great, they just want to demolish everything in front of them and then at the end of the day claim to be victorious and make their own rules. So this is a company that is extraordinary by any measure and challenges every rule that has ever been written about a business.”

    Some analysts have said that Amazon could take in as much as 3 billion U. S. dollars in sales in its first five years in Australia (around I percent of the total 225 billion U.S. dollar market), but Harvey has refuted those claims, saying that local retailers would be putting up “one hell of a fight” when Amazon launches is main retail services in Australia. “We will be over there fighting them like no American retailer has ever fought them,” he said. “Any price that they put we will beat or equal.”

    Meanwhile, Harvey's thoughts were backed up by the former CEO of supermarket chain Woolworths. Roger Corbett, who said Amazon would struggle to keep its lower wages and claims of lightning fast delivery to rural parts when it opens in Australia. “Amazon will have an impact on the market place, but they are coming into an already very competitive market,” he told News Corp.

Dear Editor,

    I am writing to you about the article in your magazine last month about youth crime. As a teenager myself I found the article rather offensive(冒犯的) as it suggested that the largest part of teenagers get into trouble with the police at some time or another. I can honestly say that I have never committed a crime(犯罪) and as far as I know, neither have any of my friends.

    I don't know where the journalist got his information from or if he did any proper research, but the way he described teenagers gave me the impression that he doesn't actually know many teenagers. Maybe when he was younger he was regularly in trouble with the police and that's where he got his ideas from. If this is true then he shouldn't judge other people from his own behaviour in the past.

    Many teenagers I know always help other people in the community, such as raising money for charity and doing voluntary work. A group of us recently spent an entire Sunday morning picking up litter in our local park. We didn't get paid for it; we just wanted to make it cleaner and safer for everyone, especially as many young children and dog walkers use the park.

    Also, as teenagers, we are far too busy studying for exams and doing homework to be "walking the streets every night, looking for trouble", as your journalist wrote in his article. I have to study after school every night during the week. I do get some free time at the weekend but I like to play football, go cycling or swimming, go to the cinema or have coffee with my friends and have a chance to talk to them. I think you will agree that there is nothing criminal about that.

    As your magazine is aimed at young readers, I think your journalists should be more careful about what they write and they should research their ideas better, or you may find that teenagers stop buying your magazine altogether.

Yours sincerely,

Daniel Browning

    Learning Chinese could be one of the most important decisions you ever make. Chinese is becoming the language to learn in the 21^st century. With the world's largest population and a rapidly growing middle class, China stands to become the engine of the world's economy in the coming years. This will make learning Chinese very important for people in many industries, or for those of us who wish to visit China or learn from its culture and history.

    There is an ongoing effort to modernize the writing system and standardize the language. An increasing number of people learning Chinese are learning the Mandarin, so unless you absolutely need to learn another dialect (such as Cantonese), be sure you are studying Mandarin.

For native English speakers Chinese is one of the most difficult and most different languages to learn. The vocabulary is wholly unfamiliar and unlike anything we know. In addition, in the Chinese tone system, words are spoken in rising or falling tones, which help to distinguish between them. Furthermore, there is the Chinese writing system— a collection of thousands of individual ideograms (表意文字), or symbols, which represent a word or an idea. These ideograms have no phonetic value—that is to say, we can't tell how the word is pronounced by how it is written. There is a method to present written Chinese in a phonetic script called pinyin. If you are learning Chinese, you'll be working with this pinyin system, but the beauty of the traditional writing system shouldn't be passed up. All these factors make learning Chinese difficult for us. Yet, for a determined learner, there's always a way to overcome it.

    Guide dogs are going to be available for the children who are unable to see normally in the UK for the first time, as the age limit is to be removed. The Guide Dogs for the Blind Association is to begin training dogs to help blind people under the age of 16.

    The association says too many youngsters with impaired eyesight are lacking in independence. They have only a limited social life because of their disability. Giving some of them guide dogs at a younger age is intended to help them to widen their range of activities and to improve their sense of self-confidence and independence. Guide dogs for these teenagers will begin to be provided from next year. There has been an experimental project to test the use of guide dogs with younger people.

    Charlotte, aged 14, was among the youngest guide dog owners. She had been gradually losing her eyesight since the age of eight, and lost her eyesight completely this year. She has been assisted by a two-year-old guide dog. Charlotte used to have a long stick to help her move around, but having a guide dog allows her much more freedom and makes her feel safer.

    However, the association says there is a worryingly patchy supply of services for the young blind people across the UK, and it calls for a sharp increase in the number of guide dogs all over the country. As with adult blind people, only a small number of them are likely to be considered suitable for a guide dog. Most will continue to rely on extra help and training from education and social services.