Nowadays, a new method is used to decide who are the top students in school. The best students are those who not only get high marks, but also follow the rules and the behavior standards for middle school students. Here are some of the new rules and standards.

    Tell the truth. Have you ever copied someone else's work in an exam? If you have, then don't do it again! That's not something an honest student should do. If you have played computer games for two hours in your room, don't tell your parents you were doing your homework.

    Learn to be loving and caring. Good students love animals and care about other people.

    Learn to work together with others. It would be more fun when more people work together. Did you quarrel(争吵) with your teammates when your basketball team lost? Only working together can make your team stronger. Be friendly to the people you are with. Try to think of others, instead of only yourself.

    Be open to new ideas. Have you ever thought that people could live on the moon? Perhaps you'll discover Earth II some day. Don't look down upon new ideas. Everyone's ideas are important. You should welcome them, because new ideas make life better for everyone.

    Use the Internet carefully. The Internet can be very useful for your study. Some websites on the Internet are not for kids, so make sure to visit the web pages that are good for you. You can use the web for fun or homework. Can't you find any good websites for children?

    Angad Rekhi, a graduate student and an assistant professor of electrical engineering, has developed a wake-up receiver. This wake-up receiver has many potential applications, particularly in designing the next generation of net worked devices, including so called "smart" devices that can communicate directly with one another without human intervention (介入).

    Once attached to a device, a wake-up receiver listens for a unique ultrasonic（超声波）pattern that tells it when to turn the device on. It needs only a very small amount of power to maintain this constant listening, so it still saves energy overall while extending the battery life of the larger device. A well-designed wake-up receiver also allows the device to be turned on from a significant distance.

    Given the increased interest in networked devices, researchers and industry organizations are starting to define what features and techniques will become standard. Regardless of whether this ultrasound wake-up receiver is among these standard designs, it is likely wake-up receivers of some kind will be combined into commercial applications soon.

    By comparison, the ultrasound wake-up receiver requires a battery but has much greater range than the wirelessly powered devices, while still maintaining a long lifetime due to extremely low power draw. These two technologies-wireless power and wake-up receivers-would likely serve different purposes but both indicate at a turning point in devices that make up the Internet of Things.

    "In light of a long-promised future where interconnected, autonomous, widespread and unremarkable technologies make life easier, the networked devices available now, like video doorbells and app-enabled lights, seem like rather slight advances." the researchers said. They believe technologies like theirs could help cross the gap between the Internet of Things as we know it and the Internet of Things at its best-whatever that may be.

    4-Day Classic Beijing Tour The 4-day classic Beijing tour is designed for tourists who come to visit China for the first time. It covers the most popular and typical places in Beijing, fully displaying the scenery, culture, history, local lifestyles and features, food and drinks, business, etc. for you.

    Day 1：Arrival in Beijing

    Your guide meets you at Capital Airport, and helps you check in at your hotel.

    Enjoy Beijing Duck as welcome dinner.

    Accommodation：Beijing downtown

    Day 2：The Great Wall & the Summer Palace

    Start your day at the most famous part of the Great Wall, the Badaling Great Wall. Leave the downtown for the Great Wall at 8am. Since it is a long drive to the Great Wall （about 2 hours' riding） have a break at the Jade Museum on the way. Lunch will be enjoyed in a local restaurant. In the early afternoon come back to the city and have a sightseeing tour of the Summer Palace.

    Recommended Activity：Beijing Opera Show （Liyuan Theatre, 19：30-21：10 every evening）

    Accommodation：Beijing downtown

    Day 3：Beijing city sightseeing & Local experience

    Your guide meets you at the hotel at 8 am and set out for the day's touring：    Tian'anmen Square and the Forbidden City.

    After visiting the two sites, have a break and get ready for lunch.

    Hutong visit：see some traditional arts of the old Beijing, such as paper cutting and kite making, and visit a local family.

    Accommodation：Beijing downtown

    Day 4：Beijing Olympic sites

    Visit the Olympic sites：Bird's Nest, Water Cube and Olympic Park, witnessing the fast developing modern China. Enjoy some free time after visiting the sites.

    After lunch, it is shopping time and then the tour is over.

    Until the 1990s coffee was rarely served in China except at luxury hotels aimed at foreigners. When Starbucks opened its first outlet there in 1999, it was far from clear that the country's avid tea-drinkers would take to such a different-and usually more costly- source of caffeine. Starbucks tried to attract customers unused to coffee's bitter taste by promoting milk and sugar-heavy concoctions(调和) such as Frappuccinos.

    But coffee has become fashionable among the middle class in China. Starbucks now has about 3, 800 outlets in China- more than in any other country outside America. Statista, a business-intelligence portal(门户网站), says the roast coffee market in China is growing by more than 10 % a year. Starbucks and its rivals see big opportunities for expanding there.

    So too, however, do home-grown competitors. A major new presence is Luckin Coffee, Beijing- based chain. Since its founding less than two years ago, it has opened more than 2,300 outlets. On May 17th Luckin's initial public offering on the Nasdaq stockmarket raised more than $570m, giving it a value of about $4bn.

    Luckin's remarkable growth is sign of change. No longer do Chinese consumers see coffee as such a luxury. Most of Luckin's outlets are merely kiosks where busy white-collar workers pick up their drinks, having ordered them online. Super-fast delivery can also be arranged through the company's app. Independent coffee shops are springing up. The growth is striking given the country's reputation for its tea-drinking culture where many residents like to relax in teahouses sipping tea served gracefully.

    But the two markets are different. The teahouses tend to cater to older people who like to spend long hours playing mahjong and gossiping. At the coffee shops it is rare to see anyone over 40. Young people use them for socialising, but much of their interaction is online -sharing photos of their drinks and of the coffee-making equipment. An option on the Chinese rating app Dianping allows users to search for wanghong ("internet viral") coffee houses: ones with particularly photogenic decor(照片装饰) where better to sip and We Chat?

Every year, thousands of teenagers participate in programs at their local art museums. But do any of them remember their time at museum events later in life? A new report suggests that the answer is yes--and finds that arts-based museum programs are credited with changing the course of alumni's（毕业生的） lives, even years after the fact. 

The Whitney Museum of American Art, the Walker Art Center and the Museum of Contemporary Art, Los Angeles recently asked researchers to conduct à study to find out how effective their long-standing teen art programs really are. They involved over 300 former participants of four programs for teens that have been in existence since the 1990s. Alumni, whose current ages range from 18 to 36, were invited to find out how they viewed their participation years after the fact. 

Among the alumni surveyed, 75 percent of them thought the teen art program experience had the most favorable impact on their own lives, beating the family, school and their neighborhoods. Nearly 55 percent thought that it was one of the most important experiences they had ever had, regardless of age. And two-thirds said that they were often in situations where their experience in museums affected their actions or thoughts. 

It turns out that participating in art programs also helps keep teens keen about culture even after they reach adulthood: Ninety-six percent of participants had visited an art museum within the last two years, and 68 percent had visited an art museum five or more times within the last two years. Thirty-two percent of alumni work in the arts as adults. 

Though the study is the first of its kind to explore the impact of teen-specific art programs in museums, it reflects other research on the important benefits of engaging with the arts. A decade of surveys by the National Endowment for the Arts found that the childhood experience with the arts is significantly associated with people's income and educational achievements as adults. Other studies have linked arts education to everything from lower dropout rates to improvement in critical thinking skills. 

Feeling achy and feverish? Your misery has plenty of company. By the end of December, the tally(记录) of flu-like illnesses in the state exceeded the peaks in the two previous seasons, when the biggest number of cases occurred in February and March. This time, the flu virus seems to be hitting even harder.

Flu is unique among human diseases. It circulates constantly in cool and dry areas. Because it spreads from person to person and can be picked up easily, nearly everyone is exposed. While it's unclear whether the annual flu epidemic(流行病) will worsen this year, or just arrived earlier, fears have been increased by the severity of flu in Australia during its most recent season and the fact that the vaccine may protect against the predominant(盛行的) kind of the flu only 30 percent of the time.

Despite the worries, doctors and public health officials say there is no evidence that people are getting sicker than usual. Flu cases in Massachusetts started rising around Thanksgiving and increased steadily, with an especially steep climb in the last week of the year. "This is a bad flu season but not a horrible one," said Dr Andrew G. Villanueva, a lung specialist and chief quality officer at the Lahey Hospital & Medical Centre in Burlington.

"The flu season, while clearly in full swing, doesn't ‘feel different' from previous years," Villanueva said. "We're not seeing a lot of people being hospitalised because of flu," he said. "Most people with the flu recover on their own without medical care."