The average（平均的）American child spends three to five hours a day watching TV. In 1961, the average child began to watch television at age three; however, today it is nine months. Yet, most parents think that television has bad influence on their children. For example, in the early 1970s, my parents believed that my bad eyesight was the result of sitting too close to the screen, and they therefore made my stay at least six feet from it. Today, most people have no such worry, but many new ridiculous (荒谬的) sayings have appeared:

      *TV makes kids stupid. Many children watch more educational programs when they are pre-schoolers. When they grow up, they can read more books and have much better ideas to solve difficult problems than other children.

     *TV makes kids violent. The real story is not so simple. Hundreds of studies show that watching violence on TV makes children more aggressive (好斗的). But a study of over 5,000 children also finds that some positive programs make children kinder. The problem is that kids are increasingly watching shows with violence instead of those suitable for their age.

      *Sitting around watching TV makes kids overweight. An experiment finds that when children watch less television, they do lose extra weight; however, reducing their television time does not make them more active. The real problem lies in snacking (吃零食). A widespread habit for kids, and junk-food advertisements.

      *TV helps kids get to sleep. The opposite is true. The more television children watch, the more likely they are to have irregular sleep and nap (小睡) patterns. Allowing kids to watch television is part of the problem, not the solution.

    For those who make journeys across the world, the speed of travel today has turned the countries into a series of villages．Distances between them appear no greater to a modern traveler than those which once faced men as they walked from village to village. Jet planes fly people from one end of the earth to the other, allowing them a freedom of movement undreamt of a hundred years ago.

    Yet some people wonder if the revolution in travel has gone too far. A price has been paid, they say, for the conquest (征服) of time and distance. Travel is something to be enjoyed, not endured (忍受).  The boat offers leisure and time enough to appreciate the ever-changing sights and sounds of a journey. A journey by train also has a special charm about it. Lakes and forests and wild, open plains sweeping past your carriage window create a grand view in which time and distance mean nothing. On board a plane, however, there is just the blank blue of the sky filling the narrow window of the airplane. The soft lighting, in-flight films and gentle music make up the only world you know, and the hours progress slowly.

    Then there is the time spent being “processed” at a modern airport. People are conveyed like robots along walkways; baggage is weighed, tickets produced, examined and produced yet again before the passengers move to another waiting area. Journeys by rail and sea take longer, yes, but the hours devoted to being “processed” at departure and arrival in airports are luckily absent. No wonder, then, that the modern high-speed trains are winning back passengers from the airlines.

    Man, however, is now a world traveler and cannot turn his back on the airplane. The working lives of too many people depend upon it; whole new industries have been built around its design and operation. The holiday maker, too, with limited time to spend, patiently endures the busy airports and limited space of the flight to gain those extra hours and even days, relaxing in the sun. speed controls people's lives; time saved, in work or play, is the important thing—or so we are told. Perhaps those first horsemen, riding free across the wild, open plains, were enjoying a better world than the one we know today. They could travel at will, and the clock was not their master.

    Are children becoming addicted to the Internet?

    Children are becoming addicted to the Internet and for many it is one drug that can't be beaten. Not all children, but an alarming number of them are being swept up in this age of digital information.

    Websites like Myspace, Youtube, and Facebook, are becoming so popular that many kids can't help but to be addicted to them just in order to fit. Why not become part of a society where you judged by how many friends on a friend list ? What has become of the world , when instead of calling your best friend on the phone you send them a message electronically and wait around for hours to see if they get on and read it ?Often on the web there just aren't enough adults setting kids straight and too many teenagers causing trouble .

    However, it is biased to claim all kids are addicted, or even that all kids who are addicted to the web are negatively affected by it. While the web can be a large waste pool of negative influence, it is also a wealth of positive knowledge, friendly social networking, and even gateways to future employment. Perhaps it isn't so important whether or not a child is addicted to the web and more important that parents know exactly what the kids are doing there.

    Many computers have optional parent controls that allow parents to block the children from entering certain types of sites, or even individual ones. Such programs are unfortunately not used enough by today's parents, who in many cases are caught up on computers themselves. All one needs to do is google search parental controls and you will be provided with any number of companies that can help with programs for tracing child activity and, if necessary, limit time spent on the Internet .

    Justin Bieber is only fifteen years old and has become very popular already. He was raised (抚养) by his mother in Stratford, Ontario, Canada. When he was twelve he won second place in a local singing contest. He started posting (贴) videos of his contest performances on the Internet for his friends and family. Soon these videos had been seen more than ten million times.

    A music manager saw those videos and asked Justin to fly to Atlanta, Georgia, to meet the singer and songwriter Usher. A year later Justin released (发行) his first albumMy World. It sold over a million copies in the first two months. Four singles were released before the album. All became popular. This made Justin Bieber the only singer in the history of the Billboard magazine to have four singles from his first album among the most popular songs before the album's release.

    Justin Bieber performed for President Obama at the White House last December. He was part of a musical show that raised money for the National Children's Medical Center. He was also among the many singers who recorded the song We Are the World. The song was produced to raise money for Haiti. The video has been seen more than seven million times on the Internet. And it was shown during the opening ceremony of the 2010 Winter Olympics in Vancouver.

    Justin Bieber's family did not have much money when he was young. He did not have as much so other children did. Justin says he wants to influence young people in a good way. He believes that you can do anything if you put your mind to it.

    Teens who are preparing to undergo cosmetic surgery(整容手术) often have unrealistic expectations. The growing numbers of makeover television shows which make cosmetic surgery seem simple，have encouraged adolescents to pursue surgery to improve their physical appearance. As a result, more teenagers are going under the knife to achieve a desired look.

    When teens feel the need to have plastic surgery, they believe that it is not a huge deal, but they may not be mature enough to make such a life altering decision. If teens feel inadequate before surgery，they will most likely feel disappointed afterwards. Not only is surgery complex and risky for mature adults，it is extremely dangerous for younger people，and some doctors are performing these procedures on kids as young as fourteen！

    The cost of procedures can add up to thousands of dollars. Insurance does not cover the costs of these procedures. Teenagers often pay for surgery themselves 一 a very costly purchase for a young person. Not only can surgery become addictive for insecure teens，the consequence can be disappointing. When surgery takes an unexpected wrong turn, irreparable (不可挽回的）damage can occur. Any surgery on a young，undeveloped person has a risk of complication (并发症）such as infection (感染），which can lead to death.  Even if . there are no complications, there is no guarantee that surgery will provide the perfect nose or sculpted body. No matter how minor the procedure, it is not as effortless as it appears.

    Of course, there are cases where plastic surgery is appropriate. If a child has a serious injury or scarring from an accident，it can be beneficial. In all cases, parents must be involved in the process for the welfare of their child, and must guide them in the right direction. Fortunately, parents or legal guardians (监护人）must sign documents allowing their child to have plastic surgery. Doctors also need to be a part of the decision. Most experienced and trust-worthy physicians turn down the opportunity to operate on a teenager unnecessarily.

    Plastic surgery is a life-changing experience.  Hopefully, more teens will realize that there is more to a person than physical beauty, and learn to accept themselves for who they are.

    These days a green building means more than just the color of the paint. Green buildings can also refer to environmentally friendly houses，factories，and offices.

    Green building means "reducing the effect of the building on the land"，Taryn Holowka of the US Green Building Council (评议会) in Washington，D.C.，said. According to Holowka，building accounts for 65 percent of total US electricity use.

But green buildings can reduce energy and water use. Also，the buildings are often located near public transportation such as buses and subways，so that people can drive their cars less. That could be good for the environment，because cars use lots of gas and give off pollution. Green buildings are often built on developed land，so that the buildings don't destroy forests.

    Marty Dettling is project manager for a building that puts these ideas into action. The Solaire has been called the country's first green high-rise building. According to Dettling，"We've reduced our energy use by one-third and our water by 50 percent."

    The Solaire cuts energy in part by using solar power. "On the face of the building we have solar panels (光板) which change the sun's energy into electricity，" Dettling explained.

    The Solaire also has lights that automatically turn off when people leave the room. In addition，the building has lots of windows，allowing people to use the sun for light during the day. The Solaire cuts water by reusing it.

    Not everyone is eager to move into a green building，however. Some people think that things like solar panels cost more money than more traditional energy sources. Anyhow，Holowka said，"It's going to be big."