We've considered several ways of paying to cut in line: hiring line standers, buying tickets from scalpers (票贩子), or purchasing line-cutting privileges directly from, say, an airline or an amusement park. Each of these deals replaces the morals of the queue (waiting your turn) with the morals of the market (paying a price for faster service).

    Markets and queues—paying and waiting—are two different ways of allocating things, and each is appropriate to different activities. The morals of the queue, “First come, first served, have an egalitarian (平等主义的) appeal. They tell us to ignore privilege, power, and deep pockets.

    The principle seems right on playgrounds and at bus stops. But the morals of the queue do not govern all occasions. If I put my house up for sale, I have no duty to accept the first offer that comes along, simply because it's the first. Selling my house and waiting for a bus are different activities, properly governed by different standards.

    Sometimes standards change, and it is unclear which principle should apply. Think of the recorded message you hear, played over and over, as you wait on hold when calling your bank: “Your call will be answered in the order in which it was received.” This is essential for the morals of the queue. It's as if the company is trying to ease our impatience with fairness.

    But don't take the recorded message too seriously. Today, some people's calls are answered faster than others. Call center technology enables companies to “score” incoming calls and to give faster service to those that come from rich places. You might call this telephonic queue jumping.

    Of course, markets and queues are not the only ways of allocating things. Some goods we distribute by merit, others by need, still others by chance. However, the tendency of markets to replace queues, and other non-market ways of allocating goods is so common in modern life that we scarcely notice it anymore. It is striking that most of the paid queue-jumping schemes we've considered—at airports and amusement parks, in call centers, doctors' offices, and national parks—are recent developments, scarcely imaginable three decades ago. The disappearance of the queues in these places may seem an unusual concern, but these are not the only places that markets have entered.

    When the telephone rings late at night, most women guess it must be one of only four or five people calling. A sister? Maybe. An emergency? Possibly. A mother? Probably not at that time of night. Much more probably it is a close female friend calling to tell you that she has split up with her boyfriend again or perhaps simply that a good movie has just started on TV.

    At a time when families are spread far and wide and marriages often end in divorce, friendships are becoming more and more important. Erika, a 32-year-old lawyer, is strengthened by her ten-year friendship with her married friend Jane. “I was very sick one night, so I called Jane at about 3:00 a.m. to talk about it,” she says. “She was very supportive and even came over to take me to the doctor's the next morning.”

    As American TV shows like Friends, which follows the lives of a very close group of young friends, have become more popular, many of us are beginning to see the value of such friendships. TV shows like this tell us that our romantic relationships may not last, but we need to keep in touch with our close friends if we want to survive.

    A TV show called Real Women is about the lives and relationships of five former school friends. In this show, family, husbands, and work are all less important than friendships. One of its actresses says the show reflects her own experience. “Friendship is about commitment. I don't see some of my friends for ages but when we get together, it is as if time hasn't passed.”

    This is true of Erika and Jane's friendship. With Erika's family 200 miles away，it is Jane who keeps a spare set of keys to Erika's apartment and waters her plants whenever she is away. “Having Jane around gives me a certain amount of freedom. It is not the kind of thing that you could ask anyone to do, but she knows I would do the same for her.” Erika feels that because she no longer sees her family every day, she now enjoys a closer relationship with her best friend. Jane, who may move to a different city soon, is worried about leaving such a support system of friends. “My friends have more to do with my life than my parents and, therefore, I don't have to spend a lot of time explaining things to them. Friends are more up to date with what is happening.”

    For nearly a century before there was such a thing as a space program, a view of space was possible. People could see full views of the Moon, explore Mars(探测火星),and study the outer space beauty. All of this was made possible by a small group of artist-astronomers(天文艺术家) who worked to show people how other worlds in space might look.

    Lucien Rudaux, a French artist, was the first to use his artistic ability and his knowledge of astronomy in art. His paintings show a mixture of skilled observations, brilliant imagination and careful attention. As a result, many of his works have come surprisingly close to actual conditions on distant planets. His painting of Mars included moonlike craters(火山口) that were first photographed by the astronauts in 1965. His 1930 painting of a dust storm looks remarkably like a photograph of a storm taken by the astronauts in 1976.

    The artist-astronomers, including Rudaux, made people interested in outer space by painting what turned out to be exact portraits of the planets.

    Alibaba opened China's version of Amazon's cashier-less store, “Tao Cafe” at its second annual Taobao Maker Festival taking place from 8—12 July, and then showed it to the public. By scanning a QR code（二维码）on Taobao app at the entrance of the store« consumers are tracked with cameras for facial recognition. After going through the checkout doors, customers will automatically make a purchase through their smartphones without needing to head to a register and be able to leave the store with what they buy in hand.

    The company, putting its efforts in Artificial Intelligence and data technologies, caused some ripples（波动）among offline retailers （零售商）. But if you think the e-commerce giant plans to get a slice of the physical-store pie, then you might get it wrong: “It's not about Alibaba wanting to open more cafes, we are not in the restaurant business.” it's about digitalizing the footprints of the visitors to an offline store, '' said Chris Tung, chief marketing officer of Alibaba Group.

    He said, for example, in the online world, Alibaba can always personalize every web page based on users interest and preference thanks to big data, “When you open our app, every moment is different.” But on the other hand, “offline is becoming not so exciting anymore”, because many physical stores are always found to be very similar with no variation.

    Tung said offline retailers could improve by adopting online data competence to link the identity of the customers» and optimize（优化）their in-store shopping experience. So in this sense, after physical stores have an understanding of what their customers need online, then they can allocate the products in the physical offline store accordingly. He further explained the pop-up Tao Cafe is one of the ways to present this “new retail” idea and opens up people's thinking and calls for more partnership.

People can't live well without music. It's quite necessary in people's life. Music has a magic energy to help people. It will bring people many surprises.

It can help you free from heart pain. When you feel sad, you can try listening to the music. It will calm you down. You enter the music world. You pay more attention to the music than your sadness.Then the"dark clouds"slowly clear up.

It is also a strong driving force. For example, when you win a match, you certainly have a great mood. At this time, exciting music will arouse(激起) your fighting. It will push you forward and you will continue to work harder.

Music include(囊括了) much knowledge, such as the language and the history. You can learn a lot from it. Different nations make their own special music. Different music expresses different ideas.You can explore different cultures behind the music. As a useful tool(工具), music teaches you to better understand foreign cultures and love them.

Four Best Shows for Toddlers (学步的孩童)

Peppa Pig

If you're looking for a British TV show for toddlers, look no further than Peppa Pig. This charming series will have your little one love Peppa and her family as they start their adventures through life in a colorful world.

Each episode of Peppa Pig is like a colorful storybook, combining five parts into 25 minutes of pure joy. Not only is it entertaining, but it also teaches essential social skills, such as kindness, loyalty, and thoughtfulness, making it an ideal choice for young kids and preschoolers.

Sesame Street

If you have fond memories of watching Sesame Street back in the day, why not pass on some of that magic to your little one? The show now is in its 54th season, which is the longest running program of the four shows, and the whole group is still bringing the fun. Not only is the 30-minute program still a crash course in all things smart, with numbers and words on the menu, but there's also wonderful music.

Daniel Tiger's Neighborhood

Step into the interesting world of Daniel Tiger, the lovable star of this show that's a popular offshoot (分支) of the timeless Mr. Roger's Neighborhood. With a runtime of 30 minutes, this show offers plenty of learning opportunities through engaging stories and catchy musical numbers.

Curious George

If you have fond memories of your parents reading Curious George books, you're in for a treat! The beloved stories were transformed into a charming lively series on PBS in 2006, ideal for toddlers. Each episode clocks in at a solid 30 minutes, and it's all about encouraging kids to be as curious and eager to explore as George himself.