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.

    Traveling by bicycle is a very popular means of transportation throughout China. China has a huge population, and it is said that there is at least one bicycle for every two people within the country. Of course, many people in China ride bicycles purely for sport or exercise, but it's also a much more commonly accepted means of everyday transportation, as compared to countries such as the United States.

    If you are living for a long period of time in China, chances are you will want to purchase your own bicycle so that you can use it whenever you want for transportation or just for the enjoyment of riding. Even if you don't use a bicycle for everyday transportation, owning one can be a great way of enjoying some of the trails in the rural areas, just for fun. However, if you are just visiting China, renting a bicycle can be a more convenient choice.

    It is important to choose the correct bicycle for your use. You'll find that in China, the one-speed style of bicycle is extremely popular. These bicycles are great if you want to ride around in the city to see the sights. They are quite comfortable and easy to ride. You can often rent a bicycle for an entire day for around $15.

    However, if you wish to ride on some of the rural paths, a mountain bike style would be a better choice. They are great for different kinds of road surfaces, providing for a safer ride. If you are planning to have a desire to tour and still be able to carry packages with you, then a touring bike would be the best choice. These are generally the most expensive to rent, but are extremely handy for carrying packages and even some of your luggage along with you.

    Students taking Georgia Tech's online Knowledge-Based Artificial Intelligence course received some surprising news. Jill Watson one of the nine teaching assistants(TAs) that had helped them finish the challenging course for the past five months was not a ‘‘she'' but an “it”—an intelligent robot!

    Watson is the brainchild of Ashok Goel, who teaches the popular online course. The Professor-of Computer and Cognitive Science in the School of Interactive Computing came up with the idea as a way to deal with a number of questions posed by students in the online forums(论坛). According to Goel, every time the course is offered, the 300 or so students that enroll post over 10,000 questions which are often repetitive. This led Goel to wonder if a smart robot would handle the questions which require standard responses.

    Having worked' with IBM's Watson technology platform in the, the professor knew it would be ideal for his artificial TA: Jill Watson. The artificial intelligence system that uses natural language processing and machine learning to analyze large amounts of data has even been cleverer than human competitors on the television show. It would therefore easily be able to handle routine questions that required little “thinking”.

    The professor and his team of graduate students began by populating Jill's memory with 40,000 questions and answers from past terms. Then came the testing stage. At first, Jill was not very good and often gave strange answers. It often got stuck on certain keywords. By the end of the semester, Jill had attained enough knowledge and skills to participate in forums without any management from Goel, or the other assistants.

    Have you ever been to France before? It is not only a country of great food, fashion and art. It's also home to the most influential painters in the world.

    Edouard Manet

    He was one of the first artists to paint modern life. He began to paint in his own style, but still used some of Couture's techniques like thick lines and dark colors. He was greatly influenced by Claude Monet and Berthe Morisot, which can be seen in his use of light shades. Most of his paintings had scenes of daily life on the streets of Paris. His works include Olympia and The Absinthe Drinker.

    Camille Pissarro

    In his early years, Pissarro painted scenes of a river or a path from memory. After meeting Claude Monet and Paul Cezanne, who painted in a more realistic style, he changed his course to Impressionism. During his career, he experimented with various styles, and finally formed his own one. His works include Old Market at Rouen and Sunset at St. Charles.

    Vincent van Gogh

    He had a huge influence on art in the 20th century. His early works were most painted in somber tones. However, influenced by Monet, Pissarro, and Bernard, he adopted brighter colors in his works, and started creating his own techniques. Although he had produced more than 2,000 works of art, the artist sold only one painting during his lifetime — Red Vineyard at Arles. His works include The Potato Eaters, Starry Night and Bedroom in Arles.

    Claude Monet

    He was the founder of the Impressionist movement and completely changed the French painting in the 19th century. Although he first started by selling charcoal caricatures（木炭讽刺画）in Paris, he soon started painting with oil after meeting Eugene Boudin, who taught him to use oil paints and also encouraged him to paint outdoors. And then he painted with his own style. His works include Impression, Sunrise and The Water Liles.

    About 30 years ago, I left Cuba for the United States with my son. After getting settled finally in Brunswick, New Jersey, I enrolled (注册) my son in kindergarten. Several weeks later, my son's teacher asked me to meet him at his office.

    In the teacher's office, and exchange of greetings was followed by his questions: "Is your son mentally retarded (弱智的)? Does he suffer from any kind of mental disability?"

    Was he talking about my wonderful Scola? No, no, it can't be. What a helpless, lonely moment! I told him that Scola was a quiet, sweet little boy, instead. I asked him why he was asking me all these questions.

    My son could not follow the teacher's directions, he told me, and thus, Scola was disrupting the class. Didn't he know my son did not speak English yet? He was angry: "Why hasn't your son been taught to speak English? Don't you speak English at home?"

    No, I didn't speak English at home, I replied. I was sure my son would learn English in a couple of months, and I didn't want him to forget his native language. Well, wrong answer!

    What kind of person would not speak in English to her son at home and at all times? "Are you one of those people who come to this country to save dollars and sent them back to their country, never wanting to be a part of this society?"

    Needless to say, I tried to tell him I was not one of "those people." Then he told me the meeting was over, and I left.

    As I had expected, my son learned to speak English fluently before the school year was over. He went on to graduate from college and got a job, earning close to six figures. He travels widely and leads a well-adjusted, contented life. And he has benefited from being bilingual (双语的).

    Speaking more than one language allows people to communicate with others; it teaches people about other cultures and other places- something very basic and obviously lacking in the "educator" I met in New Jersey.

    Do you often feel like you want to wash your hands again and again? Or do you ever have the urge to line up the items on your desk? These all may be symptoms of obsessive-compulsive disorder (强迫症), or OCD, which affects about 2 percent of the world's population.

    Those who suffer from OCD have difficulty finding successful treatment because doctors don't clearly understand its causes. But now, a new study has given hope for a future cure.

    For the study, which was published in the journal Nature in October, researchers observed humans, dogs and mice. They discovered four genes that may be responsible for obsessive-compulsive behaviors in humans.

    But why observe dogs and mice to learn about humans?

    "Dogs, it turns out, are surprisingly similar to people," study author and geneticist Elinor Karlsson, of the Broad Institute of MIT and Harvard University, US, told NPR. "They're chasing their own tail or chasing shadows like normal, but they're doing it for hours."

    In the study, researchers made a list of about 600 genes in mice, dogs and humans that they thought might cause OCD, reported NPR. They then compared those genes in two large groups of people – those who don't have OCD and those who do. In the end, they identified just four genes with mutations (突变) in the OCD group. The genes are active in a neurological pathway (神经通路) in the brain, which is believed to help control actions. But the mutations could block the neurological pathway.

    For example, for people without OCD, when they finish washing their hands, a signal will come, telling them to stop. But for people with OCD, the neurological pathway is blocked, so the message isn't getting through. As a result, the person will continue to wash their hands.

    "OCD and anxiety are kind of like learning disorders," Marcos Grados, an OCD researcher at Johns Hopkins University School of Medicine, told NPR. "Often with OCD, people have a fear of germs (细菌). You can't touch tables or door knobs (把手) and every time it's the same sensation (感觉). You didn't learn that the last time you touched a door knob, nothing happened. It's like touching it for the first time ever."

    However, that doesn't mean people who have these genetic mutations will always have obsessive-compulsive behaviors, the researchers said. That's because the disorder also relies on other things, such as one's environment.

    According to reports, various existing treatment methods have low success rates in patients. But now that we know where OCD comes from, let's hope we will soon find an effective way to treat it.