Alpacas(羊驼) are members of the camel family, having lived in South America for thousands of years. Their fur gives the animals a teddy bear_like appearance. Alpacas are too small to be used as animals of burden but are valued only for their fur. Generally, their lifespan is around 15 to 20 years.

    Alpacas are social animals that live in family groups made up of a male, females and their young. They are gentle, elegant, curious, intelligent and observant. They are safe and pleasant to be around, moving gracefully and slowly around the field, and are therefore unlikely to run into or over anyone, even small children. Occasionally, an alpaca will spit snd kick, but the soft padded(有爪垫的) feet usually do little more than just“get your attention”.

    Because these animals are environmentally friendly and need so little grass and food, you can usually raise from two to eight alpacas on an acre of land with grass or hay. A single, 60 pound bale(大捆) of hay can generally feed a group of about 20 alpacas for one day. Alpacas also require access to plenty of fresh water to drink.

    Alpaca fur is used for making knittedd and woven(编织) items, just as sheep's wool is. These items include blankets, sweaters, hats, gloves, scarves, a wide variety of textiles(针织品) in South America, and sweaters, socks, coats and bedding in other parts of the world. The fur comes in more than 52 natural colors as classified in Peru, 12 as classified in Australia and 16 as classified in the United States.

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    It had coaster brakes and only one gear (齿轮). My two older brothers used it before me. The twenty-inch, black frame showed its age. It was scratched and nicked from years of use, but I didn't care. It was mine now.

My tricycle stood by the front steps of our house—-forgotten. In the front yard. I held the handlebars, swung my right leg over and settled myself onto the seat. My legs weren't long enough for both to touch the ground at the same time. I leaned to one side one foot supported me, I looked around, made sure no one was watching and kicked off My feet reached for the pedals and began to pump.

    After a few wobbly (不稳定的))yards, I fell off, and landed on my shoulder in the grass. I jumped up, brushed myself off, got back on and fell again.

    A week later, I rode in circles around the yard. Always to the left, I didn't wobble or fall. I was steady as I followed the beaten trail ['d created in the grass. I was free and I was flying.

    “Michael!” Mum called. ‘Supper is read!'

     I turned toward the front steps, wobbled and fell to the ground. I didn't know how to go straight or to the right. I'd learned to travel in circles to the left.

A year later, I was bicycling all around the neighbourhood. At twenty years old, I left home and cried. It was a lonely time in my life. Mum wasn't there It was time to learn how to turn again. I married and became a Dad —- I stumbled（跌跌撞撞）. There was someone else to think about new turns to stumble through.

    Each time I fell. I got up, brushed myself off and turned around the obstacle (障碍). Each time I think I'm on a straight road, life throws a turn in front of me. I may fall, but I always climb back on my seat.

    Our most important institutions, our schools and our workplaces, are designed mostly for extroverts (性格外向者).

In the typical classroom, students are often divided into groups—four or five or more kids all facing each other. And kids are working on countless group assignments. Even in subjects like math and creative writing, which you think would depend on unaccompanied flights of thought, kids are now expected to act as committee members. As for the kids who prefer to go off by themselves or just to work alone, those kids are seen as outliers (局外人) often or, worse, as problem cases. And the vast majority of teachers believe that the ideal student is an extrovert as opposed to an introvert (性格内向者), even though introverts actually get better grades and are more knowledgeable, according to research.

The same thing is true in our workplaces. Now, most of us work in open plan offices, without walls, where we are subject to the constant noise and stare of our coworkers. And when it comes to leadership, introverts are routinely passed over for leadership positions, even though introverts tend to be very careful, much less likely to take outsize risks —which is something we might all favor nowadays. And interesting research by Adam Grant at the Wharton School has found that introverted leaders often deliver better outcomes than extroverts do, because when they are managing thoughtful employees, they're much more likely to let those employees run with their ideas.

    In fact, some of our great leaders in history have been introverts. I'll give you some examples. Eleanor Roosevelt, Rosa Parks, Gandhi -- all these people described themselves as quiet and soft-spoken and even shy. However, they all took the spotlight, even though every bone in their bodies was telling them not to. And this turns out to have a special power, because people could feel that these leaders were in control, not because they enjoyed directing others and not out of the pleasure of being looked at; they were there because they had no choice, because they were driven to do what they thought was right.

    In colleges around the country, most students are also workers.

    The reality of college can be pretty different from the images presented in movies and television. Instead of the students who wake up late, party all the time, and study only before exams, many colleges are full of students with pressing schedules of not just classes and activities, but real jobs, too.

    This isn't a temporary phenomenon. The share of working students has been on the rise since the 1970s, and one-fifth of students work year round. About one-quarter of those who work while attending school have both a full-course load and a full-time job. The arrangement can help pay for tuition (学费) and living costs, obviously. And there's value in it beyond the direct cause: such jobs can also be critical for developing important professional and social skills that make it easier to land a job after graduation. With many employers looking for students with already-developed skill sets, on-the-job training while in college can be the best way to ensure a job later on.

    But it's not all upside. Even full-time work may not completely cover the cost of tuition and living expenses. The study notes that if a student worked a full-time job at the federal minimum wage, they would earn just over $15, 000 each year, certainly not enough to pay for tuition, room, and board at many colleges without some serious financial aid. That means that though they're sacrificing time away from the classroom, many working students will still graduate with at least some debt. And working full time can reduce the chance that students will graduate at all, by cutting into the time available for studying and attending classes.

    There is little reward for attending but not finishing college. Students who wind up leaving school because of difficulty in managing work and class are likely to find themselves stuck in some of the same jobs they might have gotten if they hadn't gone at all. The difficulty of working too much while in school can create a cycle that pushes students further into debt without receiving any of the financial or career benefits.

    I was 16 when my father finally decided he would send me to wilderness camp for several months. He had threatened to do it many times before, but my mother had always managed to prevent him from doing so. This ti me he insisted on doing it.

    The latest incident was the last straw. Impulsively (冲动地), I had pushed Mr. Ford, my math teacher, down a flight of steps at school. He broke his arm in two places. Anyway, he had agreed not to accuse me as a favor to my dad, who was in the middle of a tight race for sheriff (执法官) in our town. But my reckless behavior had my dad's closest advisor talking.

    "John, he's your son and he's a kid, but he is dragging you down," I heard Jake Hutch tell my dad through his closed office door the night after I pushed Mr. Ford. "If you can't make your son obey the rules, how can you make the law obeyed in this town?"

    So, off to Pisgah National Forest I went. I imagined hours of untold abuse at the hands of some strong sergeants (军士). I was determined not to be broken. I was who I was,

    Nearly every day for six months, a small group of other troubled teens and I carried our 30-pound backpacks on a difficult journey covering about 10 miles. We hiked in a rough wilderness that seemed untouched by civilization.

    Our sergeants were firm but kind, not frightening as I had imagined. We learned how to make a fire without matches and create a shelter with branches and grass. We learned which plants were safe to eat out in the wild. I felt myself change. I was calm and often reflective. My old, impulsive self was gone.

    One morning, six months later, my dad came to pick me up. I ran to hug him and saw happiness and love in his eyes.

    "So what's it like being sheriff?" I asked on the ride home.

    "I lost the race, Danny," he said.

    "I'm sorry, Dad." I knew my behavior probably had a lot to do with the defeat.

    Dad squeezed my shoulder and brought me close. "As long as I don't ever lose you, I'm okay."

    From Antigua to Zanzibar, these spots promise an incredible trip for 2019.

    Antigua, Guatemala

    "Antigua is worth every penny, but that doesn't mean you'll have to empty your wallet," says Hudson. There are plenty of budget-conscious activities. It won't cost you a coin to visit Santo Domingo del Cerro, an outdoor sculpture park. Wanting something sweet? Head to ChocoMuseo. Admission is free and so are the samples!

    Odessa, Ukraine

    Odessa is having a bit of a tourism boom nationwide-not that we're surprised, given its sandy beaches and pastel-colored buildings-but it's still fairly under the order for international audiences. You can also count on this port city for affordable fun. Tickets to the Odessa Opera House start at a mere $ 2!

    Bogotá, Colombia

    "Travelers on budget will find Colombia's vast capital, far more of a bargain and every bit as fascinating," says Hudson. "It's free to visit Museo de Oro and on Sundays many of the big roads are closed to accommodate food carts, street entertainers, and pedestrians."

    Zanzibar

    Zanzibar attracts vacationers with its white sand beaches, greenish-blue tides, colorful coral reefs, and oceanfront seaside. Of course, wandering in historic Stone Town is pretty appealing too. Either way, you needn't spend a penny in this amazing place. It's also worth noting that Jozani Forest is the only place in the world you can see endangered red colobus monkeys.