When I was a boy my father told me that he could do anything he wanted to. Dad said that he wanted to be the first to develop color prints in our city and so he did．

        When I was 16，Dad looked closely at the violin I played and said that he wanted to make one．He read about violin-making, and then became a violin-maker at the age of 43. He bought the tools and materials, opened a small store and set Mom up as the shopkeeper, while he worked at a local company. He retired from the company 17 years later and continued to make violins and other instruments.

        Dad often guessed why the Stradivarius violins sounded so beautiful. Some experts told him that it was the special varnish(油漆)that gave the instruments their beautiful sound．Dad argued that chemists could analyze the varnish—if that was the answer．

One of Dad's friends asked him which kind of wood was used to make violins．When Dad explained that the top was made of spruce(云杉), his friend said that he had all old piece of spruce which Dad might be interested in.

He worked for the next 12 months making a violin from the wood that his friend had given him. It proved to be an excellent violin and it would become Dad's masterpiece. He believed that the secret of the Stradivarius sound was in the wood itself.

        Later, the instrument was stolen, Dad's spirit was broken and he stopped making instruments. But he kept the music shop until he was 80 years old, selling guitars and violins.

        The violin has been missing for more than 25 years．Somewhere a musician is playing a late-20th-century violin with an excellent tone．The owner today may never understand why this Ordinary-looking violin sounds so much like Stradivarius．

    We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

    When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration(迁移) is probably the migration of the fish, which is called “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

    Recently, scientists have studied the migration of a kind of lobster(龙虾). Every year, when the season of bad weather arrives, the lobster get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.

    So, sometimes we know why humans and animals move from one place to another, but at other times we don't. Maybe living things just like travel.

    Choosing where to live may be one of the biggest decisions you'll make when you move to Sydney, but you'll have plenty of help.

    Temporary arrival accommodation

    Before you move to Sydney, we recommend that you book a temporary place to stay. Once you get here, you can look for longer-term accommodation.

    --sydney.edu.au/accommodation/short-term

    On-campus-residential colleges (fully catered饮食全包的)

    The University has eight residential colleges on the Camperdown/Darlington Campus, including International House, a residential community of global scholars. Colleges provide comfortable, fully furnished single rooms and daily meals, along with sporting, cultural, leadership and social programs. They also include on-site tutorials(辅导课) in addition to campus-based classes.

    --sydney.edu.au/colleges

    On-campus residences (self-catered饮食自理的)

    The University has two self-run residences—Queen Mary Building (QMB) and Abercrombie Student Accommodation—on the Camperdown/Darlington Campus. Both just under a year old, they house up to 1000 students. These residences provide modern single-study rooms with large common living, learning and study spaces, shared kitchens, a theatre, gyms, soundproofed music rooms, art studios, sky lounges and rooftop gardens.

    --sydney.edu.au/campus-life/accommodation/live-on-campus.html

    Off-campus living

    More than 90 percent of our students live off campus. The University is close to many dynamic and multicultural suburbs such as Annandale, Newtown, Chippendale and Glebe. A great place to search is our large online database of properties.

    --sydney.edu.au/campus-life/accommodation/live-off-campus.html

    Japanese researchers made a botanical announcement on Monday that quickly circled the world. They had developed a banana with an eatable peel (皮)—the Mongee banana.

    The technique used by scientists at D&T Farm is called "freeze thaw awakening". The process involves starling banana trees out in an environment that's nearly minus-80 degrees Fahrenheit, then moving the trees with their still-ripening bananas to a climate of around 80 degrees - an environment banana trees typically grow in the entire time. The extreme temperature change puts the banana's growth into a superfast-speed mode. In this case, the fruit ripens before the skin can catch up. The result is soft and thin skin that hasn't fully developed.

    The banana has been produced only in small amount so far, so customers face a steep bill to save themselves the bother of peeling their banana: it is currently priced at 648 yen ($6) a piece. There's also the question of whether a banana peel is actually worth eating and whether regular banana peels had, rather suddenly, become too big a problem for people who slip on them to bear anymore.

    And what about shipping? For most of the fruit's history, the peel has provided protection, allowing it to travel long distances from where it's grown to nearly every country on Earth. A softer banana would be a step back from regular banana varieties that travel thousands of miles.

    But the banana in the news is arguably good, particularly for a fruit that rarely receives its share of attention. Bananas are the most  consumed fruit in Japan, and also in the U.S. So even if eatable-peel bananas don't ensure plentiful bananas, or even necessarily nutritious bananas, they still look great on Instagram, which probably ensures them a future in Japan's famous luxury (奢侈) fruit markets.

    Johnny Smith was a good math student at a high school. He loved his computer. He came home early every day, and then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his computer to the computer in his high school office. The school office computer had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny' parents looked at his report card. They were very happy.

    "An A in English!" said Johnny's Dad. "You're a very clever boy, Johnny."

    Johnny is a hacker(黑客). Hackers know how to take information from other computers and put new information in. Using a modem（调制调解器）, they join their computers to other computers secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank computer account and put it into their own ones. And they never have to leave home to do it! They are called hackers.

On an autumn afternoon, a remote sheep farm in southern Greenland is quiet. The silence is abruptly broken when dozens of sheep come thundering across the hills overlooking the farm. Walking after them are Lars Nielsen and his 37-year-old son Kunuk Nielsen.

The Nielsen family has owned and run the farm since 1972. Kunuk says the summers now are longer than when he was a child and that drought has become a problem. The fields are not so green as those in the old days. He has to buy hay (草料) from European countries.

The effects of a warming climate are obvious on the land. While he intends to struggle on, his older brother Pilu has chosen a different path.

Pilu, 40, lives in Qaqortoq in the south of Greenland -- a town of about 3,000 people. Ten years ago, he got his helicopter pilot's license and is now part owner of a small company called Sermeq Helicopters. It caters to construction and telecommunication workers and an increasing number of foreign tourists.

Pilu says he loves his family's sheep farm. But he saw that warming temperatures were making remote areas of Greenland more accessible and wanted to look for other opportunities. His company's most popular tours include a visit to Greenland's glaciers.

The warming temperatures are also affecting traditional ways of life, particularly hunting. The sea ice is changing; it's becoming less so that hunting on ice becomes more difficult. When there's no sea ice, it's difficult to use dog sledges (雪橇), and the whole culture around having dogs and dog sledges and doing traditional hunting on the ice is sort of diminishing.

Besides, many Greenlanders, like Pilu, are leaving the countryside for towns and the capital city Nuuk, where opportunities are greater. A report found that Nuuk's share of Greenland's population grew from 17.2% in 1977 to 29.2% in 2014. If there were enough houses in Nuuk, the share would even be bigger.