Are you interested in some of the most popular brands such as Beats headphones, True Religion jeans, and UGG shoes? They are also expensive. But some experts say they are not much better than cheaper brands.

    For example, Jim Wilcox works for Consumer Reports. He tested all kinds of headphones. He says that $80 Koss Pro headphones provide basically the same quality and comfort as Beats. So why do people pay twice or even 10 times as much for the hottest brands?

    Experts say it's because fashionable, expensive brands send a message. Brands say “I belong” or “I can afford it.”

    Some people think that expensive brand names are worth the price. They say that some designer clothes are really top quality and that they last longer than cheaper brands. Some teenagers choose to wear popular brands because these brands make them feel good about themselves.

    Alexandra Allam, 17, likes to buy brand-name products. “I'd rather spend the extra money to get something I know I'll be satisfied with,” she says. Her friend Emmy Swan agrees, saying “As long as you can afford it, it seems reasonable to buy what you want.” But not all teenagers agree. “Spending hundreds of dollars for designer sunglasses is stupid and unreasonable,” says Daniel Steinbrecher, 16. “It's fake (假的) happiness.”

    People who are against wearing expensive brand names say that many designer brands aren't any better. “It's wasteful to buy things just because they are popular,” says Edmund Williams, 15. “You'll feel better if you buy things because you like them. If you have extra money to spend, it would be better to give it to people in need.”

    He wrote that the “human mind is capable of excitement without the application of unpleasant and violent stimulants (刺激物)”. And it appears that simply reading these words by William K Wordsworth proves his point.

    Researchers at the University of Liverpool found the writing of Shakespeare and Wordsworth and the like had a beneficial effect on the mind, making it active and excited by catching the reader's attention and leading to moments of self-reflection.

    Using scanners, they monitored the brain activity of volunteers as they read pieces of classical English literature both in their original form and in a modem translation. And according to the Sunday Telegraph, the experiment showed the more challenging writing and poetry set off far more electrical activity in the brain than the simple readings.

    The research also found poetry, in particular, increased activity in the right brain, an area concerned with “autobiographical memory”, which helped the readers to reflect on their own experiences in light of what they had read. The academics said this meant the classics were more useful than self-help books.

    The brain responses of 30 volunteers were monitored in the first part of the research as they read Shakespeare in its original and modern form. In one example, volunteers read a line from King Lear, “A father and a gracious aged man: him have you madded”, before reading the simpler, “A father and a gracious aged man: him you have enraged”. Shakespeare's use of the adjective “mad” as a verb caused a higher level of brain activity than the straightforward version.

    The next part of the research is looking at the extent to which poetry can affect psychology and provide benefit. Volunteers' brains were scanned while reading four lines by Wordsworth, and four “translated” lines were also provided. The result showed that the first version caused a greater degree of brain activity.

    “Poetry is not just a matter of style. It is a matter of deep versions of experience that add the emotional and biographical to the cognitive (认知的),” said Professor Davis, leader of the researchers.

    An earthquake is one of the most common natural disasters. It may cause great damage.  So it is wise to learn some simple safety tips to protect yourself or your family members.

    Fragile items, like those made of glass should usually be placed on a lower surface, near the ground instead of placing them on cupboards higher up. Never place them near your bed, sofas and other furniture where you would be sitting or lying down. When there is a strong movement, these pieces will fall on the floor directly and not on you.

    There is a strong chance of short circuits（短路）and fire breakouts during an earthquake. Make sure you turn off electrical connections and gas immediately when an earthquake happens.

    During an earthquake, lie beneath an object that is not easily damaged. Do not go near objects that could directly fall on you. Never use the elevator to go down. Stay inside until the shaking stops and it is safe to go outside. Research has shown that most injuries happen when people inside buildings try to go out. Use the staircases at all times.

    If you are outdoors, do not take shelter under a tree, streetlights, electric poles or tall buildings. If you are driving, stop your car and stay in a safe place. Do not park your car under a tree or any tall object.

    If trapped in debris (瓦砾堆), cover your mouth with a handkerchief or clothing. Tap on a pipe or wall so rescuers can find you. Use a whistle (哨子) if one is available. Never shout for help. Shouting can cause you to breathe in dangerous amounts of dust. Do not light a match because you may burn yourself. Do not move about or kick up dust.

    Can dogs and cats get along well in the same home? People who are thinking about getting a dog as a friend for their cat are worried that they will fight. A recent research has found that if the cat is taken back home before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. In two-thirds of the homes cats and dogs have a good relationship.

    However, it wasn't all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression(侵略，好斗) and fighting were found in 10% of the homes. One reason for this is probably that some of their body languages are just different. For example, when a cat turns its head away it means aggression, while a dog doing the same means submission(顺从).

    In homes with cats and dogs living peacefully, researchers found a surprising behavior. They are learning how to talk each other's language. It is a surprise that cats can learn how to talk "Dog", and dogs can learn how to talk "Cat".

    What's interesting is that both cats and dogs have appeared to become smarter. They can learn to read each other's body languages, suggesting that the two may have more in common than was expected. Once familiar with each other's body language, cats and dogs can play together, and enjoy sleeping together on the sofa.

    The importance of this research on cats and dogs may go beyond pets — to people who don't get along well, including neighbors, colleagues at work, and even countries. If cats and dogs can learn to get along, surely people have a good chance.

    In the years ahead, AI will raise three big questions for bosses and governments. One is the effect on jobs. Although bosses publicly praise the broad benefits AI will bring very much, their main interest lies in cutting costs. One European bank asked a technology company to find a way of reducing the staff in its operations department from 50,000 to 500. This special report has shown that AI-enhanced tools can help reduce staff in departments such as customer service and human resources by a large amount. The McKinsey Global Institute finds that by 2030 up to 375m people, or 14% of the global workers in companies or countries, could have their jobs automated away. Bosses will need to decide whether they are prepared to offer and pay for retraining, and whether they will give time off for it. Many companies say they are all for workers developing new skills, but not at the employer's expense.

    A second important question is how to protect privacy as AI spreads. The Internet has already made it possible to track people's digital（数字的）behaviour in extremely small detail. AT will offer even better tools for businesses to monitor consumers(客户) and workers, both online and in the physical world. Consumers are sometimes happy to go along with this if it results in personalised（个性化的）service. But AI probably brings privacy violations (侵犯) that are seen as shocking and morally unacceptable. In the wrong hands, useful technology could be against fair and equal treatment. Countries with a record of the careful watching of a person place, especially by the police or army and human-rights abuses already using AI to monitor political activity. The police around the world will use AI to spot criminals, but may also look on ordinary citizens secretly, in order to discover things or find out information about them. New rules will be needed to ensure agreement on what degree of monitoring is acceptable.

    The third question is about the effect of AI on competition in business. Today many firms are competing to provide AI-enhanced tools to companies. But a technology company that achieves artificial intelligence could race ahead of competitors, put others out of business and lessen competition. This is unlikely to happen in the near future, but if it did it would be of great concern.

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