Not so long ago, a sailor sailing across the cold waters of the northern Pacific Ocean might have had every chance of being confronted by a sea cow. This cow would have measured 10 meters long, and weighed between five and ten tones. And it would spend most of its day cruising the seas, eating grass growing underwater. The cow in question was known as Steller's sea cow, which is now extinct.

    Today, many people are unaware that such an extraordinary creature once existed, or don't know its incredible story. But scientists have discovered many fundamental facts about this mystical animal.

    Surprisingly, the first recorded sighting of a Steller's sea cow didn't happen until 1741, when a sailing expedition was stuck on an uninhabited island, later named Bering Island. The sailor survived by hunting and eating the huge sea cow. Like its modern relatives, the sea cow lived in herds. That and its slow-moving behaviour made it easy to be caught.

    Those sailors that escaped Bering Island spread word of the bounty(大量) of meat to be found off its shores. As a result, more and more expeditions came to hunt the animals. One report stated that one sea cow could feed 33 men for a month.

    Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed. That makes the Steller's sea cow one of the few truly large mammals known to have been driven extinct in the modern age.

    Congratulations on having been offered, and accepting, a place to study at Cambridge! This page offers some tips that will hopefully make your arrival at Cambridge as stress-free as possible.

    Before you arrive

    Your College or Department will send you all the information you need to prepare yourself for your time in Cambridge, including College information, for example, accommodation, course information, and similar related details. You will be sent an email asking you to complete the University's Student Registration exercise. It will only take a few minutes.

    Pre-arrival Freshers' Events this summer

    Around the world in August and September, Cambridge Alumni（毕业生）Groups will be hosting pre-arrival Freshers' Events for new students coming to Cambridge this autumn. These events are a great opportunity to prepare for university and make some friends before you arrive. There will be the chance to meet current students and alumni from whom you can get tips and advice for living and studying in Cambridge.

    Arrival and registration

    Most courses start in October. The term between October and December is known as Michaelmas Term in Cambridge. Officially, the first day of the Michaelmas Term is 1 October and this date will be shown on your offer letter. Your College or your Department will advise you about when to arrive. Ceremony activities begin around 1 October for most students. When you arrive in Cambridge, you should go first to your College. They will be glad to know that you have arrived safely and will advise you on what to do next.

    Matriculation

    Matriculation marks the formal admission of a student to membership of the University, and a College may not normally allow an unmatriculatied student to be a resident member of the College. Every freshman for matriculation must agree with the following belief by signing the Matriculation Registration Form:

    I promise to observe the Statutes and Ordinances of the University as far as they concern me, and to pay due respect and obedience to the Chancellor and other officers of the University.

    An experiment was carried out at British school into the performance of new pupils. At the start of the year, the pupils were each given a rating, ranging from "excellent prospect" to "unlikely to do well". These were totally untrue ratings and did not reflect how well the pupils had previously performed. However, these ratings were given to the teachers. At the end of the year, the experimenters compared the pupils' performance with the ratings. Despite their real abilities, there was an astonishingly high connection between performance and ratings. It seems that people perform as well as we expect them to.

    The Self-fulfilling Effect is also known as the Pygmalion Effect. This comes from an old Greek story. The story was also the basis of George Bernard Shaw's play "Pygmalion", later turned into the musical "My Fair Lady". In Shaw's play, Professor Henry Higgins claims he can turn a Cockney flower girl, Eliza Doolittle into a duchess. But, as Eliza herself points out to Higgins' friend Pickering, it isn't what she learns or does that determines whether she will become a duchess, but how she's treated.

    The implication (含义) of the Pygmalion Effect for leaders and managers is massive. It means that the performance of your team depends less on them than it does on you. The performance you get from people is no more or less than what you expect, which means you must always expect the best. As Goethe said, "Treat a man as he is and he will remain as he is. Treat a man as he can and should be and he will become as he can and should be."

    It is estimated that more than half the world's population is bilingual (双语的), and in an increasingly globalised world, there are obvious benefits of speaking more than one language. However, for many years, parents were advised not to teach their children to speak more than one language from birth. Learning two or more languages simultaneously (同时) was believed to cause confusion and slow down academic development. While it is certainly true that children who are learning to speak more than one language as their mother tongue will often mix the languages up or speak a little later, these are temporary problems, and there is no reason to avoid teaching a child more than one language.

    In fact, there are plenty of reasons to encourage your child to become bilingual from birth. As well as the obvious benefits of being able to communicate with more people, and the possibility of earning more money, children who speak more than one language have been shown to score more highly in achievement tests at school. This is true for mathematics as well as tests of verbal (言语的) skills.

    And in later life it has been found that bilinguals, on average, will tend to develop Alzheimer's disease five years later than monolingual speakers. Speaking three or more languages offers even more protection. It seems that the increased number of connections within the brain allows bilinguals to cope better with brain damage.

    But is it too late if you haven't already learned a second language in childhood? It used to be thought that the adult brain was very fixed, but recent research has shown that we continue to develop new connections in the brain throughout our lives, meaning that it's perfectly possible to learn another language to a high standard. Older learners are less likely to have native-like pronunciation, but they are better at learning vocabulary as they are able to use far more skills and strategies than children. And learning a language is like using a muscle – the more you use it, the stronger it gets, meaning that you will find your third language easier than your second, and so on.

    This story happened when I was in Saint Lucia with my family. My sister, Diana, who also happens to be my best friend and one of the funniest and kindest people I know, went blind in one eye about 9 years ago. Diana sometimes feels concerned about the way her eye looks now. The pupil(瞳孔) is no longer black; it's sort of "glows" in photos. Diana recently purchased a special contact lens (隐形镜片) that makes her eye look like it did before it changed color, but she doesn't wear this lens often because it becomes quite painful after about an hour.

    One night during our holiday, a hotel photographer was taking pictures of the guests as they entered the area set up for dinner. Diana casually said if she had known there was going to be pictures taken to capture this special memory, she would have worn her contact lens so her eye wouldn't be so shiny in the picture.

    The next day, I was sitting with Diana and her husband Ted. While we were talking, the photographer who had been at the dinner the night before, handed her a photo, leaned in and quietly said, "I matched the color of your eyes in the picture."

    As he walked away, my sister happily said to me and Ted, "Look! He fixed my eye!" The photographer stopped. He turned around and walked back to our table. He put his hand on Diana's shoulder, leaned in again and gently said, "Just to be clear: I didn't fix your eye. There isn't anything wrong with your eye. I simply matched the color. "

    Her eyes filled up with tears. It was very healing for her heart to hear these beautiful words. It didn't take much time and made so much difference. It helped her change the way she feels about herself.

    I have always loved the quote: "The world is full of good people. If you can't find one, be one!" Your acts of kindness can impact the world in profound ways!

    Some of the world's most famous musicians recently gathered in Paris and New Orleans to celebrate the first annual International Jazz Day. UNESCO(United Nations Educational, Scientific and Cultural Organization) recently set April 30 as a day to raise awareness of jazz music, its significance, and its potential as a unifying(联合) voice across cultures.

    Despite the celebrations, though, in the U. S. the jazz audience continues to shrink and grow older, and the music has failed to connect with younger generations.

    It's Jason Moran's job to help change that. As the Kennedy Center's artistic adviser for jazz, Moran hopes to widen the audience for jazz, make the music more accessible, and preserve its history and culture.

    "Jazz seems like it's not really a part of the American appetite, "Moran tells National Public Radio's reporter Neal Conan. "What I'm hoping to accomplish is that my generation and younger start to reconsider and understand that jazz is not black and white anymore. It's actually color, and it's actually digital. "

    Moran says one of the problems with jazz today is that the entertainment aspect of the music has been lost. "The music can't be presented today the way it was in 1908 or 1958. It has to continue to move, because the way the world works is not the same, "says Moran.

    Last year, Moran worked on a project that arranged Fats Waller's music for a dance party, "just to kind of put it back in the mind that Waller is dance music as much as it is concert music," says Moran. "For me, it's the recontextualization. In music, where does the emotion(情感) lie? Are we, as humans, gaining any insight(感悟) on how to talk about ourselves and how something as abstract as a Charlie Parker record gets us into a dialogue about our emotions and our thoughts? Sometimes we lose sight that the music has a wider context," says Moran, "so I want to continue those dialogues. Those are the things I want to foster. "