Machu Picchu is an unusual site in Peru and one of the most mysterious wonders of the world. Built at almost 10,000 feet on the top of an Andean mountain, the Incas built hundreds of structures made of stone. A large number of Machu Picchu's surrounding structures date back to the early 13th century, but it was considered a chief sacred site far before then. The Inca people changed the large site into a very small but wonderful city, completely self-sufficient and hidden from below. Agricultural terraces (梯田) surrounded the entire city, fed by natural spring water, supporting the entire population.

Inca Trail

    The trail is one of the most famous in the world and regarded as one of the best. It covers only 26 miles, combining cloud forest, green mountain scenery, forest, and plenty of tunnels, paving stones, and ruins. The four-day hike begins slowly but quickly changes into a difficult journey suitable for those in excellent shape. The trail winds through the Andes, leading alongside and through ruins. Though independent hiking was once permitted, now it must be done with a guide.

Funerary Rock

    It is believed that the Funerary Rock at Machu Picchu was used as a place to prepare Inca nobles for preservation, or mummifying (做成木乃伊), a common habit among the tribe. Nobles would be laid out to be mummified by the hot sun and freezing cold nights after their organs were removed. The rock is also famous as a spot from which a view of the city is afforded.

Temple of the Sun

    Within the city's castle, deep within Machu Picchu, is the Temple of the Sun, accessed only by the Emperor and

    Inca priests. It means the Inca's advanced knowledge of religion, weather, and nature, showing the great extent

    Incas went to adapt to and learn about nature. Still unbroken, the temple was built to honor the god Inti, who is exactly the sun. The temple was effectively protected. It was also a very important scientific center, built in half-moon shape with openings facing north and east. The windows' shadows in the center of the temple helped see the start of winter solstice (至日), showing farming season.

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    To develop one's taste in English，the most effective way is to read English books extensively. However, one may be at a loss to choose the appropriate books，especially as a beginner.I would like to share some of my experience.

    My first English novel was Jane Austen's Pride and Prejudice，recommended by many English teachers and professors as an ideal book for English learners. But I had great difficulty in understanding the novel，let alone enjoying it. It's not the vocabulary that troubled me，but rather the way Austen constructs sentences，and her way of thinking，which seemed too remote to me at that time. My fading enthusiasm was much recovered after reading Hemingway's novel Farewell to Arms. I particularly liked his brief and lively style. So my first suggestion is，as a beginner, you'd better choose contemporary novels instead of classical ones.

    However，reading novels is not the only way to improve your English. English essays can at once inform you，entertain you, and improve your taste in English. The best example is Bertrand Russell's work. Its language is plain, yet you cannot help feeling the elegance and the unique sense of humor. His simple language enables his philosophy(哲理) within the reach of ordinary people. Here comes my second suggestion—essays are indispensable.

    Never follow other's opinions blindly，however famous or influential the person might be. As a saying goes，one man's meat is another man's poison. With that in mind，we are sure to find out our favorite writers through reading and develop our fine taste in English.

    Everything was put neatly into my suitcase．I'm a flight attendant．I'm so organized，my half of the closet could be a display at The Container Store．My husband's half of the closet？Just thinking about it made my head ache．I carried my suitcase downstairs．Bill was in the kitchen cooking．Looking at the messy kitchen，I shouted，“Why do you have to be so messy？” Bill looked hurt，“What？” I sighed and left for the airport．

    On my last flight，an elderly couple had the seats in my section．They held hands during takeoff．Later I caught them looking into each other's eyes．Something about that look was familiar．Then I realized：it was the look Bill and I had worn in our wedding photographs．I couldn't resist asking them about the secret of their long-lasting marriage. “Have fun together，”the man said, “and never take each other for granted．”

    His words circled in my head long after we landed．Bill wasn't perfect．But then，was I？I kept complaining about his messiness and forgot his kindness，his ability to see the bright side of every situation-qualities that ran so much deeper，the reasons I had married him in the first place

    I took out my cell phone and called Bill. “I miss you already.” I said．“I miss you too，Kim，” he said．As soon as my flights were over，I rushed home．Bill met me at the door．"I have a surprise for you．"he said and led me into the kitchen．I glanced around the room．He really had worked hard．In spite of the fingerprints on that microwave floor，I could see our reflection in it：my husband and I，our smiles glowing with love for each other，just like in our wedding photos．

    When you sit down, you pick it out. When you are in your car, you reach for it．When you're at work, you take a break to have a moment alone with it. When you get into a lift, you play with it．

    Cigarettes? Cup of coffee? No, it's the third most addictive thing in modern life, the cell phone．And experts say it is becoming more difficult for many people to curb their desire to hug it more tightly than most of their personal relationships．

    With its shiny surface, its smooth and satisfying touch, its air of complexity, the cell phone  connects us to the world even as it disconnects us from people three feet away．In just the past  couple of years, the cell phone has challenged individuals, employers, phone makers and  counselors（顾问）in ways its inventors in the late 1940s never imagined．

    The costs are becoming even more evident, and I don't mean just the monthly bill．Dr．Chris  Knippers, a counselor at the Betty Ford Center in Southern California, reports that the overuse of  cell phones has become a social problem not much different from other harmful addictions: a barrier to one-on-one personal contact, and an escape from reality．

    Sounds extreme, but we've all witnessed the evidence: the person at a restaurant who talks on the phone through an entire meal, ignoring his kids around the table; the woman who talks on the phone in the car, ignoring her husband; the teen who texts messages all the way home from school, avoiding contact with kids all around him．

    Is it just rude, or is it a kind of unhealthiness? And pardon me, but how is this improving the quality of life?

    Jim Williams, an industrial sociologist based in Massachusetts, notes that cell-phone addiction is part of a set of symptoms in a widening gulf of personal separation．He points to a study by Duke University researchers that found one-quarter of Americans say they have no one to discuss their most important personal business with．Despite the growing use of phones, e-mail and instant messaging, in other words, Williams says studies show that we don't have as many friends as our parents. “Just as more information has led to less wisdom, more acquaintances via the Internet and cell phones have produced fewer friends,” he says．

    If the cell phone has truly had these effects, it's because it has become very widespread．Consider that in 1987, there were only 1 million cell phones in use．Today, something like 300 million Americans carry them．They far outnumber wired phones in the United States．

    Here are some of the smartest animals in the world.

Pigs

    Pigs are actually very smart animals. Pigs are one of the cleanest if they are given a choice. If you provide them with enough space, they will make sure they separate their dining area from their living space. Studies have also shown that they can actually be good at video games. To get food, they will follow other pigs and then steal it from right under their noses. The victimized(受害的)pigs will then come out wiser from this. They will change their behavior next time to prevent other pigs from stealing from them.

Crows

    They are smart and creative, with the highest IQ among all birds. Crows have been known to throw nuts and shells on a road so that cars will drive over and open them. They also have the ability to make knives to cut leaves and grass.

Elephants

    They have extremely large brains, even bigger than humans'. They bury(埋葬)their dead families and friends properly, the only other animal to do this besides humans. They also know which leaves are medicinal and will eat specific plants depending on the sickness they are feeling. They also have the ability to recognize themselves in the mirror.

Bottlenose Dolphins

    They actually have the ability to watch television on the their own because of their ability to process acoustic and visual(视觉和听觉)information at the same time. They can also recognize themselves in the mirror, which they use to inspect their own bodies. Their comprehension skills are very high. Studies have shown that they even have the ability to choose the “I don't know” option during difficult tests.

    Three important changes that will affect people's everyday life in the future.

    The cashless society

    Cash and bank notes will disappear almost completely. They will be replaced by smart cards with microchip (微芯片) "loaded" with some money. When we pay for goods, we will put our smart cards into a payment terminal (终端) and money will be transferred (转) from our cards to the retailer's (零售商的) card. When all the money is used up, we will be able to "reload" it by inserting it into a telephone, dialing our bank account and putting money to the card from the account. If we want to transfer money from our cards to a bank account, we will use the same method. Smart cards will be able to hold several different currencies at the same time. So if we go abroad, we will be able to use our smart cards in the same way.

    Interactive telephones

    Human telephones will be replaced by talking computers. These computers will recognize speech, ask us what information we need, find the information and change it to speech. If we want to book a flight or pay a bill by phone, we will ask a talking computer to do it. Of course, this won't happen until all the technology is in place, but when it is we will soon get used to using computers in this way.

    ________________

    Traffic congestion (拥挤) in cities will be reduced because drivers will use electronic maps to find the quickest way to their destinations and avoid traffic jams. Because people have to pay to drive in cities, they will stop using their cars and use public transport instead. Speed control systems will be built into cars. These systems will control the speed of the car according to the traffic and weather conditions and prevent accidents.