Probably no other musical instrument is as popular as the guitar around the world. Musicians use the guitar for almost all kinds of music. Country and western music would not be the same without a guitar. The traditional Spanish folk music called Flamenco could not exist without a guitar. The sound of American blues music would not be the same without the sad cry of the guitar. And rock and roll music would almost be impossible without this instrument.

    Music experts do not agree about where the guitar was first played. Most agree it is ancient. Some experts say an instrument very much like a guitar was played in Egypt more than 1,000 years ago. Most experts say that the ancestor of the modern guitar was brought to Spain from Persia sometime in the 12^th century. The guitar continued to develop in Spain. In the 1700s it became similar to the instrument we know today.

    Many famous musicians played the instrument. The famous Italian violins Niccole Paganism played and wrote music for the guitar in the early 1800s. Franz Schubert used the guitar to write some of his famous works. In modern times Spanish guitarist Andres Segovia helped make the instrument extremely popular.

    In the 1930s, Les Paul began experimenting to make an electric guitar. He invented the solid-bodied electric guitar in 1946. The Gibson Guitar Company began producing its famous Les Paul Guitar in 1952. It became a powerful influence on popular music. The instrument has the same shape and the same six strings (弦) as the traditional guitar, but it sounds very different. Les Paul produced a series of extremely popular recordings that introduced the public to this music. Listen to this Les Paul recording. It was the fifth most popular song in the United States in 1952. It is called “Meet Mister Callaghan.”

    Why do you go to the library? For books, yes—but you like books because they tell stories. You hope to get lost in a story or be transported into someone else's life. At one type of library you can do just that—even though there's not a single book.

    At a Human Library, instead of books, you can "borrow" people. People with unique life stories volunteer to be the "books." For a certain amount of time, you can ask them questions and listen to their stories, which are as fascinating as any you can find in a book. (If you attend, make sure to review the habits that make you a good listener.) Many of the stories have to do with some kind of depressing topic. You can speak with a refugee, a soldier suffering from PTSD (创伤后遗症), a homeless person and a woman living with HIV. The Human Library encourages people to take time to truly get to know and learn from someone they might otherwise make a snap judgement about. According to its website, the Human Library is "a place where difficult questions are expected, appreciated and answered."

    The Human Library Organization came to be in Copenhagen, Denmark in 2000. Romni Abergel and his colleagues hosted a four-day event during a major Northern European festival. After the success of this event, Abergel founded the Human Library Organization, hoping to raise awareness among youth about depression, which has been growing ever since.

    Though there a few permanent human libraries, most aren't place at all, but events. Though many do take place at physical libraries, you don't need a library card—anyone can come and be part of the experience. There have been human library events all over the globe, in universities and in pubs, from Chicago to Tunis to Edinburgh to San Antonio. Check out the organization's Facebook page to see when the Human Library might be arriving near you.

    Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures（核心体温）in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity（湿度）.

In very cold climates, there is a constant danger of developing hypothermia（低体温）, which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0℃. However, differences in persons and even the time of day can cause it to be as much as 6℃ higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4℃. Below 29.4℃, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9-15.6℃. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7℃.

In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6-41.7℃. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.

    These days, it seems like everything is going digital. You can find almost everything on the Internet.

    Many people find this way of life more convenient, because they can complete their daily chores（琐事） from the comfort of their own home.

    Firstly, online shopping can be far less stressful than hitting the high street shops. There are no huge crowds of people or boring long queues. With online shopping, it's just you and your computer. It's like you have the whole shop to yourself! Secondly, online stores don't have opening and closing times. This is perfect for anyone with a busy schedule. If you want to, you can even place an online shopping order at three o'clock in the morning!

    In the busy modern world, there are clearly many advantages to online shopping. However, in my experience, there are also several cons… With online shopping, you can't try before you buy, and that's a definite disadvantage for me. Often, when my new clothes arrive, I find they don't fit very well. It's always annoying when a dress is a little too big, or when sleeves are too short… Sometimes, the clothes are not what I was expecting. A piece of clothing might look great in photos online, but quite different in real life.

    In these cases, you want to return the item, but here lies the biggest problem with online shopping. You have to pay for your order's delivery, and for an item to be returned to the warehouse! These charges are often very expensive, which suddenly make online shopping seem a little less convenient… That's why I don't choose to shop online very frequently. For now, I will continue to find the time for a trip to a real shop, where I know exactly what I'm buying!

    When I heard the piano, I walked to Mrs. Windsor's house and waited outside as I always did. That meant she was working with another student, and I was not supposed to bother them by ringing the bell. I stood against the wall and daydreamed what I'd rather be doing. "Almost anything", I sighed dejectedly. I had been tutored enough to read, understand, and even write some musical compositions, but I just didn't have a gift for it. It didn't come to me naturally. I thought back to happier times when I was writing stories and acting them out with my friends, cutting up old clothes to make dresses that performers wear in plays, and building scenery out of old things we found. But Mrs. Windsor had offered to give me the lessons for free, so I felt my duty to try.

    The door opened and Wendy Barton came out. I walked in, sat down on the piano bench and began to sort through my sheet music.

    "Hello," I heard a voice behind me say softly. I turned around to see a little girl standing behind me, eating an apple. But before I could make any response, Mrs. Windsor walked into the room in her usual urgent manner and announced, "Jennifer, this is my niece, Pasha. Pasha, this is Jennifer. Pasha will be giving you your lesson today. I'm up to my ears in something else!" she then exited to the kitchen.

Pasha set her apple down on the side table and slid beside me on the piano bench.

    "What piece do you like best?" she asked.

    "What do you mean?" I asked. "They're all the same to me. I don't know.

    "You mean you don't have a favorite?"

    "No, not really."

    Pasha looked at me, rather puzzled, then opened my sheet music to the beginning page and asked me to play. I arranged my fingers on the keys and studied the notes on the page for a moment. Then I frowned and concentrated to make the notes on the page match the finger movements. I have to admit I was a rather mechanical pianist.

    After about a page or two, Pasha gently put her hand on top of mine as if to calm my fingers. There was a long pause. "What are you hearing in the music?" I looked at her rather strangely and admitted I didn't know what she meant.

    "Like a story. What story is being playing out within the music?"

    "I guess I've never thought about it before. I don't know."

    "Here, let me try and you listen," Pasha advised.

    She closed her eyes and took a deep breath, letting her fingers dance lightly over the keys. Then, she began to play. "See, it begins here beside some kind of river. Hear the water flowing beside you?"

    Her fingers rose and fell gently on the keys. "Now the princess appears and she's picking flowers from the water's edge." A carefree, happy piece of music filled the air in time to Pasha's dancing fingers. "Oh, but she slips!" The music changed. "And our princess is being carried off by the fast-flowing stream. Quickly, the princess's horse sees her plight (困境)," Pasha continued, "and races to the river's edge where he swims out to let her catch hold of him. They make it to the bank and she hugs her faithful horse and swears she will never again wear princess skirts that weigh her down." Pasha finished with a big smile and then looked at me.

"Aren't you the girl who tells the stories?" she asked.

    "I guess. I do tell a lot of stories."

    "Oh, yes! All the kids talk about them. I've heard about you. Well, all you have to do is learn to hear the stories in the music. That's all there is to it."

    "I've never thought it that way."

    "Let's try another one, shall we?" Pasha smiled and together we played that afternoon, finding the stories in the music and learning that sometimes it takes a friend to pull you out of the river onto dry land again.

    While many Chinese watched movies at cinemas during the weeklong Spring Festival holiday, Zheng Wei explained the film The Spring Festival to an audience of visually impaired(受损伤的) people at cinema in Northern China's Tianjin.

    "Fireworks light up the dark on New Year's Eve, and children are playing in an open place covered with white snow, said Zheng to the audience, describing the visual elements of the movie while holding a micro-phone and a script.

    As the founder of "cinema for the blind" in Tianjin, the 55-year--old has insisted on brightening the dark world of the visually impaired in his own way for 11 years.

    Shao Yuxiang and her husband, who are both blind, are regular visitors of the cinema. She wore an elegant yellow sweater to attend the couple's significant "movie day".

    Since October 2007, the free movies, which are described through audio, start at 9: 30 am on the third Saturday of each month. More than 150 movies have been screened to more than 20,000 visually impaired.

    "The theater is equipped with lights a sound system, projector, and a big screen to give the blind a people so far complete and equal movie experience," Zheng said.

    In 2007, after having learned that a "cinema for the blind" established by Wang Weili had benefited many visually impaired people in Beijing, Zheng rushed to Wang's establishment for advice. Under Wang's guidance, Zheng built a new cinema in Tianjin and screened The Dream Factory by Chinese director Feng Xi-aogang. It attracted more than 50 visually impaired people from different districts and even suburban areas in Tianjin.

    Zheng always treats movie selections with seriousness He usually chooses Mandarin language movies with positive themes that reflect modern society. Special movies for certain Chinese festivals are also part of Zheng's selection criteria. "For example, The Founding of Republic is specially for National Day. Now, films for Spring Festival are on my agenda," Zheng said.