Summer's here and it won't be long before school-aged kids across America start complaining that they're tired of riding their bikes, playing at the park, swimming in the pool...and all the other awesome activities their parents hoped would keep them pleasant for the next 10 weeks. Well, if it's any comfort, such rapid boredom could suggest that the kids have amazing powers of memory. A new study shows that the better your short-term memory is, the faster you fed sated (过饱的）and decide you've had enough.

    "Though satiation can be physical, like when you feel full after eating too much, we were interested in the psychological (心理学的）side of satiation. Like when you're just tired of something," Noelle Nelson, assistant professor of marketing and consumer behavior. She and her colleague Joseph Redden at the University of Minnesota tried to think outside the lunch box." Something that was interesting to me is that some people get tired of same things at very different speeds. So if you think about pop songs on the radio, some people must still be enjoying them and requesting them even after hearing them a lot. But a lot of other people are really sick of those same songs."

    The difference, the researchers thought, might have to do with memories of past experiences. For example, studies show that people push away from the dinner table sooner when they're asked to describe in detail what they ate earlier for lunch.

    So the researchers tested the memory capacity (能力） of college students, The students then viewed a repeating series of three classic paintings…like The Starry Night, American Gothic, and The Scream...or listened and re-listened to a series of three pop songs...or three pieces of classical music. Throughout the test, the students were asked to rate （定等级） their experience from zero to tan. And the better a participant scored in the memory test, the faster they got bored." We found that people with larger capacities remembered more about the music or art, which led to them getting tired of the music or art more quickly. So remembering more details actually made the students feel like they'd experienced the music or art more often."

    The findings suggest that marketers could control our desire for their products by figuring out ways to keep us from fully remembering our experiences. We could also trick ourselves into eating less junk food by putting ourselves in the memory of a previous (之前的) snack. As for kids easily bored, just tell them to forget about it—it might help them have more fun.

    In a career that lasted more than half a century, Tom Wolfe wrote fiction and nonfiction best-sellers including The Electric Kool-Aid Acid Test and The Bonfire of the Vanities. Along the way, he created a new type of journalism and coined phrases that became part of the American vocabulary.

    Wolfe began working as a newspaper reporter, first for The Washington Post, then the New York Herald Tribune. He developed a literary style in nonfiction that became known as the "New Journalism." "I've always agreed on a theoretical level that the techniques for fiction and nonfiction are interchangeable," he said. "The things that work in nonfiction would work in fiction, and vice versa."

    "When Tom Wolfe's voice broke into the world of nonfiction, it was a time when a lot of writers, and a lot of artists in general, were turning inwards," says Lev Grossman, book critic for Time magazine. "Wolfe didn't do that. Wolfe turned outwards. He was a guy who was interested in other people." Wolfe was interested in how they thought, how they did things and how the things they did affected the world around them.

    In 1979, Wolfe published The Right Stuff, an account of the military test pilots who became America's first astronauts. Four years later, the book was adapted as a feature film. "The Right Stuff was the book for me," says Grossman. "It reminded me, in case I'd forgotten, that the world is an incredible place."

    In The Right Stuff, Wolfe popularized the phrase "pushing the envelope." In a New York magazine article, Wolfe described the 1970s as "The 'Me' Decade." Grossman says these phrases became part of the American idiom because they were accurate.

    "He was an enormously forceful observer, and he was not afraid of making strong claims about what was happening in reality," Grossman says. "He did it well and people heard him. And they repeated what he said because he was right." All those words started a revolution in nonfiction that is still going on.

    There was a lot of news related to artificial intelligence, or AI, and machine learning. Among the stories were two dealing with direct competitions between humans and machines.

    In one competition, machines that used AI performed better than human beings in a high-level reading test. Two natural language processing tools beat human in the experiment. One of the tools was built by the American technology company Microsoft. The other was created by Chinese online seller Alibaba Group.

    In another competition, a computer took on humans in live, public debates.

    The event demonstrated how AI-powered computers are increasingly being developed to think ' and sound like humans. The organizer of the debates, U. S. technology company IBM, announced split results. It said a majority of those watching said they felt the machine had done more to improve their knowledge of the subject. But, the human got more praise for communicating their ideas.

    This year, we also explored the many ways AI and machine learning are now being used. For example, some U. S. judges use machine learning systems to help them decide when, and for how long, criminals should be jailed. The system uses computers to examine data from thousands of court cases.

    One fast-growing area of AI is facial recognition, which is increasingly being used for security purposes. Recently, Atlanta's Hartsfield-Jackson airport became the first in the U. S. to permit passengers to use facial recognition technology to get on flights. A Chinese company showed off an AI system it developed to recognize individuals by body shape and walking movements. The system is already being used by Chinese police in Beijing and Shanghai.

    In addition, machine learning was used during 2018 to predict results of the World Cup soccer competition. The technology also created artwork that sold for a large amount of money. And it is being used to help farmer save time and money, while reducing environment-harming chemicals. Other technology systems are being used to follow farm animals and wildlife to collect information on their activities.

    The human face is a remarkable piece of work. The astonishing variety of facial features helps people recognize each other and is vital to the formation of complex societies. So is the face's ability to send emotional signals, whether through an unconscious red face or the artifice of a false smile. People spend much of their waking lives reading faces, for signs of attraction, hatred, trust and fraud. They also spend plenty of time trying to hide true feelings or intentions.

    Technology is rapidly catching up with the human ability to read faces. In America facial recognition is used by churches to track worshippers' attendance; in Britain, by retailers to spot past shoplifters. In China, it confirms the identities of ride-hailing drivers, permits tourists to enter attractions and lets people pay for things with a smile. Apple's new iPhone is expected to use it to unlock the home screen.

    Set against human skills, such applications might seem incremental(增值的). Some breakthroughs, such as flight or the Internet, obviously transform human abilities; facial recognition seems merely to encode(编码)them. Although faces are unique to individuals, they are also public, so technology does not, at first sight, interfere with something that is private. And yet the ability to record, store and analyze images of faces cheaply, quickly and on a vast scale promises one day to bring about fundamental changes to opinions of privacy, fairness and trust.

    Start with privacy. One big difference between faces and other biometric data, such as fingerprints, is that they work at a distance. Anyone with a phone can take a picture for facial-recognition programs to use. Facebook's bank of facial images cannot be used by others, but the Silicon Valley giant could obtain pictures of visitors to a car showroom, say, and later use facial recognition to serve them ads for cars. Law-enforcement agencies now have a powerful weapon in their ability to track criminals, but at enormous potential cost to citizens' privacy.

    The face is not just a name-tag. It displays a lot of other information—and machines can read that, too. Again, that promises benefits. Some firms are analyzing faces to provide automated diagnoses of rare genetic conditions, far earlier than would otherwise be possible. Systems that measure emotion may give autistic(孤独症的)people a grasp of social signals they find difficult.

    No fight can end, and no friendship can move on, until everyone says these little words: I'm sorry. Sometimes, though, it can be difficult to say them. {#blank#}1{#/blank#}

    It is not about winning.

    {#blank#}2{#/blank#} When you start fighting with a friend, you may feel it is important that you “win” the fight by proving you're right and he is wrong, or by making him the first to apologize. In reality, you'll both lose if you let your fight ruin your friendship, and you'll both win if you find a way to heal it.

    {#blank#}3{#/blank#}

    You may have heard the expression "His pride stood in the way." It is usually used to describe a person who is so determined to be "right" that he lets an opportunity for happiness pass him by forever. {#blank#}4{#/blank#} Remember that as time goes by, we usually forget who was right and who was wrong in a disagreement, and only remember the sadness of losing a friend.

    Take the first step.

    Are you sick of fighting? Do you think this fight is just not important enough to ruin your friendship? {#blank#}5{#/blank#} You don't have to take full responsibility for starting the fight, or even say that your feelings were wrong. But you should find something you did or said that's worth apologizing for. If you say you're sorry, it's like an invitation for your friend to do the same. Once you've both said it, you'll both feel a million times better.

A. Stop thinking about your pride.

B. Then try to be the first to apologize.

C. Here are some things to keep in mind.

D. Don't let this happen to a friendship you care about.

E. It's about taking some responsibility for the argument.

F. There are some special moments when you shouldn't take the first step.

G. Friendships aren't like the Super Bowl, and there should never be the determination of a winner.

The ancient Chinese built two great engineering wonders: the Great Wall and the Grand Canal. Though the Great Wall's effect in military {#blank#}1{#/blank#} (defend) has worn off over time, the Grand Canal remains an important channel of cultural communication.

The Grand Canal, {#blank#}2{#/blank#} is made up of three parts (Suitang Grand Canal, Beijing Hangzhou Grand Canal and Zhedong Grand Canal), is a {#blank#}3{#/blank#} (run) epic (史诗) of transformation. The man-made waterway runs more than 2,000 kilometres from north to south across the large eastern flatland of China. It is about 16 times {#blank#}4{#/blank#} size of the Suez Canal in Egypt and 33 times {#blank#}5{#/blank#} (long) than the Panama Canal, the world's second- and third-largest man-made waterways. "It sees the striking and early development of water engineering," the UNESCO website says {#blank#}6{#/blank#} (official).

In ancient times, the Grand Canal served {#blank#}7{#/blank#} the key waterway for grain transport and every kind of economic and cultural exchange. It also improved the time-consuming journeys of workers {#blank#}8{#/blank#} materials for the building of the Forbidden City in Beijing, the imperial city of the Yuan (1271-1368), Ming and Qing (1644-1911) dynasties.

Years ago, it {#blank#}9{#/blank#} (inspire) the name of Chenchen, one of the three mascots (吉祥物) of the Hangzhou Asian Games. Chenchen, from the Gongchen Bridge, which goes across the Hangzhou part of the Grand Canal, is coloured blue {#blank#}10{#/blank#} (suggest) science and technology.