When I found out I was moving to India, it was beyond a nightmare. It was something I couldn't even imagine. The impression I had of India were only based upon a few summer visits to my grandparents, filled with heat, pollution and dirt. Even though I was only six years old, I know this would be a complete change from my comfortable life in Maryland.

    During my first six months in India, my expectations were met almost exactly. I hated my new apartment; I missed my school and friends back in Maryland, and I was sick of all the dirty marketplaces that filled the streets of New Delhi.

    After those six months were over I finally realized that I was going to be in India for a while. I knew that I had to start making the most of my new life. It was then that I became completely involved in my school. My school, the American Embassy School, was filled with international students: Europeans, Australians, Chinese, and Americans just like me. But they all welcomed me with open arms. It was amazing to be among such diverse students, who had such incredible experiences to share.

    Now, when I look back at my time in India, all I can think about is how fortunate I am to have had such a wonderful experience. My move to India not only allowed me to see a completely different side of the world, but I was also able to establish unbreakable bonds with so many interesting and amazing people. Even now, after quite some years, I am still in contact with my closest friends from the American Embassy School. I cannot even imagine what I would be like without having lived in India. I would have missed out on meeting so many extraordinary people, and I would be a completely different person today.

    Can exercise during childhood protect you against memory loss many decades later? Exercise early in life seems to have lifelong benefits for the brain, in rats at least.

    “This is an animal study, but it shows that physical activity at a young age is very important—not just for physical development, but for the whole lifelong track of cognitive (认知的) development during ageing,” says Martin Wojtowicz of the University of Toronto, Canada. “In humans, it may delay the appearance of Alzheimer's symptoms (阿兹海默氏症), possibly to the point of preventing them.”

    Wojtowicz's team divided 80 young male rats into two equal groups, and placed running wheels in the cages of one group for a period of six weeks. Around four months later-when the rats had reached middle age-the team taught all the rats to connect an electric shock with being in a specific box. When placed in the box, they froze with fear.

    Two weeks later, the team tested the rats in three situations: exactly the same box in the same room, the same box with the room arranged differently, and a completely different box in a different room.

    The rats without access to a running wheel when they were young now froze the same percentage of times in each of these situations, suggesting they couldn't remember which one was dangerous. But those that had been able to run in their youth froze 40 to 50 percent less in both changed box settings.

    “The results suggest the amount of physical activity when we're young, at least for rats, has influence on brain and cognitive health-in the form of better memories-when we're older,” says Arthur Kramer of Northeastern University in Boston, who has found that, in humans, exercise promotes the growth of new brain cells.

    Business administration is the most popular undergraduate major in U.S. colleges and universities, accounting for as much as one-fifth of all bachelor degrees awarded each year. Students naturally think of a business degree as the surest way to land a good job after graduation. Many international students agree. Twenty percent studied business last year-the second most popular major after engineering, according to the Institute of International Education.

    Below are descriptions of three of U.S. colleges and universities with strong offerings in business.

    Bentley College    Waltham, Massachusetts

    Bentley offers its 4,000 undergraduates a top-flight business education and an equally strong liberal-arts program that leaves them well-prepared to join the ranks of future business leaders. The college occupies a scenic campus only a shuttle-bus ride from Boston's Harvard Square. More than 90 percent of students seek career-oriented internships（实习）.

    Bucknell University    Lewisburg, Pennsylvania

    Bucknell's 3,500 undergraduates benefit from small classes and an engaging staff at this liberal-arts institution in a remote but beautiful campus in central Pennsylvania. Accounting and financial management are specialties in the introductory management course that create and sell a product and then donate their profits to charity（慈善）.

    University of Cincinnati        Cincinnati, Ohio

    This urban university with 21,000 undergraduates, located a mile from downtown Cincinnati, was the-birthplace of cooperative education over a century ago. Under this five-year “earn while you learn” program, more than 3,000 students alternate academic study with internships in local businesses and other organizations.

    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.

    Shyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are concerned with their own appearance and actions too much. Negative thoughts are constantly occurring in their minds: What kind of impression am I making? Do they like me? Do I sound stupid? Am I wearing unattractive clothes?

    It is obvious that such uncomfortable feelings must affect people unfavorably. A person's self-concept is reflected in the way he or she behaves and the way a person behaves affects other people's reactions. In general, the way people think about themselves has a deep effect on all areas of their lives.

    Shy people, who have low respect, are likely to be passive and easily influenced by others. They need faith that they are doing "the right thing". Shy people are very sensitive to criticism. It makes them feel inferior（自卑）.They also find it difficult to be pleased by praises because they believe they are unworthy of praise. A shy person may respond to a praise with a statement like this one: "You're just saying that to make me feel good, I know it's not true.” It is clear that, while self-awareness is a healthy quality, overdoing it is harmful.

    Can shyness be completely got rid of, or at least reduced? Fortunately, people can overcome shyness with determination since shyness goes hand in hand with lack of self respect. It is important for people to accept their weakness as well as their strengths. Each one of us has his or her own characteristics. We are interested in our own personal ways. The better we understand ourselves, the easier it becomes to live up to our chances for a rich and successful life.

    When many people are worried that there are no more heroes in modern times, two university students who lost their lives to rescue drowning children have shown that heroes still exist (存在).

    According to the Inner Mongolia Morning Post, the accident occurred on the afternoon of December 14, 2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water.

    More than 20 university students who happened to be near the spot immediately went to the rescue of the children.

    Two children were quickly rescued, but the third died. The child's body was not found for three hours. Two of the rescuers, Liu Ye and Hao Longbiao, also died of cold and exhaustion (筋疲力尽).

    The body of Hao who took the lead in jumping into the lake was not found until the next day.

    A student who was unwilling to tell his name said he and his classmates from the local college were taking photos at the lake. When they heard the children's cries for help, they went to the ice hole hand in hand to rescue the children. But the ice kept breaking, causing most of them to fall into the icy water.

    Local residents held mourning ceremonies (祭奠仪式) at the lake.

    Eight of the students were seriously affected by the freezing water and were being kept in hospital for further observation, but their lives were no longer in danger.