Be careful what you say around your dog. It might understand more than you think.

    A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).

    In one experiment, the researchers took all 200 items that Rico is supposed to know and divided them into 20 groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests, Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.

    In another experiment, the scientists took one toy that Rico had never seen before and put it in a room with seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.

    The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.

    Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (品种) known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.

    It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!

    It's said that people travel to see the world. {#blank#}1{#/blank#} You walk down different streets, hear different accents, and see different views. All of this is a great way to absorb a new location and learn as much as you can.

    But there's another reason why people travel to experience something new. {#blank#}2{#/blank#} So what kind of person are you? To tell the truth, you'll learn about yourself no matter where you go.

    If you're a bookworm: Anyone studying English literature will love being on the soil of where such rich literary tradition was born. {#blank#}3{#/blank#} Maybe you'll run into one of your favorite characters during the trip.

    If you're a Disney princess fan: Head over to Prague and you'll find the setting of every fairy tale you've ever dreamed of. Prague's study abroad programs are in English and are flexible.

    If you're a history lover: {#blank#}4{#/blank#}Sure, that's a lot of places. But you've never felt quite as absorbed in the ancient world as walking around Athens and Rome.

    If you're an adventure seeker: Consider going to Australia.{#blank#}5{#/blank#}

    If you're indecisive: Just choose them all and take a Semester at Sea. You'll have your classes on a ship as it sails around the world, making stops at 15 cities in 11 countries.

Decoding the young brain

    There was a funny experiment to see how a young child would answer a specific question compared to an adult. After the adult had spent some time speaking with the child, he asked the child, “What do you think about me？” The child answered, “You talk too much.” When the adult performed the same experiment with another adult, the reply to the same question was, “I think you're a very interesting person.” Even if the adult felt the same way as the child, his brain allowed him to take a moment，consider the question, and come up with an answer. He could have been annoyed, but his answer didn't reflect it because he was being polite.

    The secret lies in the science of the developing brain. The child's honest answer was reflected in the fact that his brain wasn't equipped to filter(过滤) information before answering the question. As a result, he was honest, but he said something that may have been hurtful. However, the child did not intentionally hurt the adult; it's just the way his brain works. As a child grows into adolescence and then into adulthood, that changes.

    The human brain is made up of billions of neurons(神经元). In order for our body to execute a command, like getting up from a chair and walking to the other room, the neurons in the brain have to communicate with each other. They also help us employ our senses like taste and touch and help us remember things.

    When the neurons send messages, perhaps one sensation(感觉) the person feels is excitement about eating a cookie because it is so delicious. Later, if that person smells a cookie or hears someone talking about a cookie, it can spark the electrical signals that call up the memory of eating the delicious cookie. In an adult, he or she may remember that eating too many cookies can have consequences, like weight gain. But because the younger brain is more impulsive(冲动的), the desire to feel the pleasure of the sweet treat outweighs the consequences.

    That is because when a child is young, his brain is “wired” in such a way that he seeks pleasure and is more willing to take risks than an adult. This affects his decision-making process and it is why younger people tend to be more impulsive. Sometimes parents have to tell their children over and over again before the child remembers that something is dangerous or risky. How many times have we heard a parent say, “I tell her this all the time, but she never listens！”

    To conclude, what we know about the young brain is that children are more likely than adults to be impulsive. It isn't always necessarily because they are being naughty; it may very well be because of their brains. So the next time you ask a child what he really thinks of you, be prepared for any kind of answer.

Reading the world in 195 books

    In 2012, I set myself the challenge of trying to read a book from every country of all 195 UN-recognized states in a year. {#blank#}1{#/blank#}. I created a blog called A Year of Reading the World and put out an appeal for suggestions of titles that I could read in English.

    The response was amazing. Before I knew it, people all over the planet were getting in touch with ideas and offers of help. Some posted me books. Others did hours of research on my behalf. {#blank#}2{#/blank#}. Even with such an extraordinary team behind me, however, sourcing books was no easy task.

    But the effort was worth it. As I made my way through the planet's literary landscapes, extraordinary things started to happen. Far from simply armchair travelling, I found I was inhabiting the mental space of the storytellers. I discovered, bookpacking offered something that a physical traveller could hope to experience only rarely: it took me inside the thoughts of individuals living far away and showed me the world through their eyes. More powerful than a thousand news reports, these stories not only opened my mind to basic information of life in other places, but opened my heart to the way people there might feel. {#blank#}3{#/blank#}. Through reading the stories shared with me by bookish strangers around the globe, I realized I was not an isolated person, but part of a network that stretched all over the planet.

    One by one, the country names on the list that had begun as an intellectual exercise transformed into places filled with laughter, love, anger, hope and fear. {#blank#}4{#/blank#}. At its best, I learned, fiction makes the world real.

    Life is not easy when you are looking for something worthwhile and ready to learn from the best experiences. {#blank#}1{#/blank#} Here are some life lessons which people will learn the hard way in majority of cases.

    {#blank#}2{#/blank#}However people usually get discouraged when it takes more time than they thought it would. At this time, people refer only to people who have already achieved what they want to do. Look at any successful person and you'll notice one thing common in all of them: they took time to learn and mastered their skill like no one else. There is no elevator to success and you have to take the stairs.

    Be brave to take the road less traveled. In our whole life, we always want to follow the same path that everyone suggests, do the same thing everyone does, take the same career path everyone takes, wear the same clothes everyone wears, and hang out with the same people we work with. Why? Because we are scared to fail. But when you get bored of life, you realize that you are not meant to do what everyone does and that your destiny is different from anyone else's out there in the world. {#blank#}3{#/blank#}

    You don't have to live your life in a way society wants you to. {#blank#}4{#/blank#}Parents sometimes force their children to select a career they don't want because other children have selected that career. Worst of all, people follow them without even asking. There is no harm in believing in old beliefs but when you pursue them before your interest, sooner or later you'll realize that you should first do what you think is right.

A. It takes continuous time and effort to be successful in any area.

B. The general rule goes that the harder you try, the greater results you get.

C. Many old beliefs are being performed these days and are followed blindly.

D. It always takes tests and then fails us to learn anything worthwhile.

E. However, in most circumstances your effort and attempt go well alongside with your desired achievement.

F. But the price we pay to realize this is high because it takes a great amount of courage to follow your own path.

Kite Power

The search for new, clean energy sources has occupied the attention of scientists and politicians for years. One common resource for green energy is the wind. A new twist on this old resource could cause the energy output of wind-power plants to rise dramatically.

Standard wind-power plants rely on fixed support and generally can only reach a height of 200 meters or so. Higher than that, winds tend to be stronger and more persistent.{#blank#}1{#/blank#}

Delft University of Technology in the Netherlands and Karlsruhe University of Applied Sciences in Germany have formed a kite-power research group. The group is working to develop kites with inflatable (可充气的) wings connected to electrical gencrators on the ground. The research group's goal is to design a kite that can operate on its own for 24 hours. Research has begun，but many challenges remain，including making the generators more efficient and perfecting the automatic flight control and the structure of the kites.{#blank#}2{#/blank#}

Meanwhile, in Italy, researchers are working in a similar power generator that relies on kites. When the generator, called KiteGen, senses the wind blowing, kites are released from the ends of poles with high-resistance cables to control their height and angle. These cables are able to move the kites if the system senses incoming objects such as planes, helicopters or even individual birds. The kites themselves are light, tough and able to reach fairly high altitudes. They form a circular shape in the wind, which sets the core of the generator in motion, producing electric current. KiteGen has the potential to be very cost-effective in the long run.{#blank#}3{#/blank#}

The plant also requires relatively little space, which makes it ideal for cities and means that multiple plants can be set up to provide even more energy.

{#blank#}4{#/blank#}In the future, it may be an efficient, cost-effective addition to the other sources of energy we use, or even a replacement for some of them.

A. But the challenge is figuring out how to collect the energy from those winds.

B. Kite power has the potential to greatly improve on current wind-power strategies.

C. Wind at these altitudes (海拔高度) is stronger and steadier0 which increases productivity factors of the system to about 60%.

D. Its plan is to build a kite power station using technology that can collectively generate (产生) large amounts of energy.

E. Nevertheless, they successfully demonstrated that their kites could operate automatically at an altitude of up to 700 meters.

F. After the initial cost of designing and setting up the plant, little additional investment will be necessary, apart from standard maintenance.