The Internet has opened up a whole new online world for us to meet, chat and go where we've never been before. But just as inface-to-face communication, there are some rules of behavior that should be followed when on line. {#blank#}1{#/blank#}Imagine how you'd feel if you were in the other person's shoes.

        For anything you're about to send: ask yourself,“Would I say this to the person's face?”If the answer is no, rewrite and reread{#blank#}2{#/blank#}If someone in the chat room is rude to you, your instinct(本能) is to fireback in the same manner. But try not to do so. {#blank#}3{#/blank#}If it was caused by a disagreement with another member, try to fix thesituation by politely discussing it. Remember torespect the beliefs and opinions of others in the chat room.

{#blank#}4{#/blank#}Offer advice when asked by newcomers, as they maynot be sure what to do or how to communicate. When someonemakes a mistake, whether it's astupid question or an unnecessarily long answer, be kind aboutit. If it's a small mistake, you may not need to say anything. Even if youfeel strongly about it, think twicebefore saying anything. Having goodmariners yourself doesn't give you license to correct everyone else. {#blank#}5{#/blank#}At the sametime, if you find you are wrong. be sure tocorrect yourself and apologize to those that you have offended.

    It is not polite to ask others personal questions such as theirage, sex and marital status. Unless youknow the person very well, and you areboth comfortable with sharing personal information, don't ask suchquestions.

A. It's natural that there are some people who speak rudely ormake mistakes online.

B. Repeat theprocess till you feel sure that you'd feel comfortable saying the words to theperson's face.

C. Everyone wasnew to the network once.

D. The basic ruleis simple: treat othersin the same way you would want to be treated.

E. When you send short messages to a person online， you must saysomething beautiful to hear.

F. You should either ignore the person, or use yourchat software to block their messages.

G. If you do decide to tell someone about a mistake. point it outpolitely.

    Biologists believe that love is fundamentally a biological rather than a cultural construct, because the capacity for love is found in all human cultures and similar behavior is found in some other animals. In humans the purpose of all the desire is to focus attention on the raising of offspring. Children demand an unusual amount of parenting, and two parents are better than one. Love is a signal that both partners are committed, and makes it more likely that this commitment will continue as long as necessary for children to reach independence. But what does science have to say about the notion of love at first sight?

    In recent years the ability to watch the brain in action has offered a wealth of insight into the mechanics of love. Researchers have shown that when a person falls in love, a dozen different part of brain work together to release chemicals that trigger feelings of euphoria, bonding and excitement. It has also been shown that the unconditional love between a mother and a child is associated with activity in different regions of the brain from those associated with pair-bonding love.

    Passionate love is rooted in the reward circuitry of the brain—the same area that is active when humans feel a rush from cocaine. In fact, the desire, motivations and withdrawals involved in love have a great deal in common with addiction. Its most intense forms tend to be associated with the early stages of a relationship, which then give way to a calmer attachment form of love one feels with a long term partner.

    What all this means is that one special person can become chemically rewarding to the brain of another. Love at first sight, then, is only possible if the mechanism for generating long-term attachment can be triggered quickly. There are signs that it can be. One line of evidence is that people are able to decide within a second how attractive they find another person. This decision appears to be related to facial attractiveness, although men may favor women with waist-to-hip ratio of 0.7, no matter what their overall weight is. (This ratio may indicate a woman's reproductive health.)

    Another piece of evidence comes from work by a psychologist at Ben-Gurion University, who found in a survey that a small percentage (11%) of people in long-term relationships said that they began with love at first sight. In other words, in some couples the initial favorable impressions of attractiveness triggered love which sustained a lengthy bond. It is also clear that some couples need to form their bonds over a longer period, and popular culture tells many tales of friends who become lovers.

    One might also assume that if a person is looking for a partner with traits that cannot be quantified instantly, such as compassion, intellect or a good sense of humor, then it would be hard to form a relationship on the basis of love at first sight. Those more concerned with visual appearances, though, might find this easier. So it appears that love at first sight exists, but is not a very common basis for long-term relationships.

    China has been drinking tea since the time of Shennong, 5,000 years ago. Britain's relationship with tea is much shorter, but tea enjoys the pride as the UK's national drink. According to the UK Tea Council, British people drink an average of three cups a day or a national total of 165 million cups every day.

    With figures like these, it is no surprise that time spent taking tea affects the working day in Britain. A recent survey found that 24 minutes a day are lost to making, buying and drinking tea and coffee. That is, £400 a year is lost in working hours per employee, or 190 days over a lifetime. So, should employers be worried about this lost working time, or does the tea break make up in other ways?

    One argument is that caffeine(咖啡因) improves mental state: a drink of tea or coffee can make you active and focus on work.

    Professor Rogers of the University of Bristol disagrees. After years of studying caffeine he sees nothing can prove that. “Workers would perform equally well if not drinking it at all,” he says. “But if they're often drinking it and then go without, they'll feel tired and won't perform well.”

    Occupational Psychologist Cooper instead emphasizes the role tea breaks play in sedentary (久坐的) office life, and in building social relationships. “We need to make people more active and see other people. The tea break is one way of doing this,” says Cooper.

    And Professor Rogers also points out the comfort effect of a hot drink: “We warm our hands on them on a cold day; they're comforting and play a big role in our everyday life. Whatever the caffeine's doing, I'd say these 24 minutes aren't wasted.”

    Want to stay away from colds? Put on a happy face.

    Compared to unhappy people, those who are cheerful and relaxed are less likely to suffer from cold, according to a new study. It's possible that being happy helps the body fight illnesses, say the researchers from New York University.

    “It seems that positive feelings may reduce the danger of illness,” said the study's chief researcher Sheldon Cohen.

    In an earlier study, Cohen found that people who were cheerful and lively caught coughs and colds less often. People who showed positive feelings were also less likely to tell their doctors that they felt ill.

    In this study, Cohen's study interviewed 193 adults every day for two weeks. During the interviews, the people told researchers about the happy or sad feelings they had that day.

    After the two weeks, the people were given colds by doctors and had to stay alone in a room for six days.

    The result showed that everyone in the study was equally likely to get ill. But for people who said they felt happy during the research period, their illness was less serious and lasted for a shorter time.

    Cohen believes that when people experienced positive feelings, their body may produce a chemical that helps fight illness and disease. So if you are worried about your health, look on the bright side more often.

    Put an ice cube from your fridge into a glass of water. You have a piece of string (线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.

    You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.

    First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt (融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again.

    After a minute or two you may raise the piece of string and with it you will raise your piece of ice!

    This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don't put enough salt, the water will freeze again.

Europe is famous for big cities and world-class art museums. It's easy not to notice the small, beautiful villages in Europe. However, if you're after relaxation, peaceful country walks, beautiful buildings, and chances for different cultures on your next trip, consider cutting down some of your city time and head out to a village instead. Here are three of the most beautiful villages in Europe, along with our top picks for places to stay in each.

Bibury in Gloucestershire, England

Often praised as the most beautiful village of the Cotsworlds, Bibury is also one of the most popular places for visitors to stay in the area, and attracts a lot of tourists from around the world. It's set among the green hills that the area is known for and is composed of light-beige(浅米色) stone houses, including the famous Arlington Row, a line of houses dating back to 1380.

Cong in County Mayo, Ireland

Set on a small sea-facing island on the western coast of Ireland, Cong is a quiet village that's famous for its grey stone ruins and many outdoor activities. One of the biggest reasons for its fame is that the 1952 film The Quiet Man was made there, but the biggest draw for most visitors is the chance to visit (or stay in) Ashford Castle, which is now run as a great expensive hotel.

Montepulciano in Tuscany, Italy

Spread over a hilltop nearly 2, 000 meters above sea level, the Tuscan village of Montepulciano offers beautiful buildings from the Middle Ages, as well as many chances to visit wineries(酿酒厂) and taste the locally produced Vino Nobel di Montepulciano. With fortifications(防御工事) dating back to the 14th century, the village has churches and public squares, which are truly fascinating.