Nowadays airfare isn't getting any cheaper with fuel costs rising every day. Luckily, there are plenty of ways to find the most affordable fares and also avoid paying as many extra charges as possible when you plan ahead.

    China has more than 30 intangible cultural heritage recognized by the UNESCO, including paper-cutting, the Dragon Boat Festival, Peking Opera, acupuncture(针灸)and so on. The organization adopted a decision that China's “The Twenty-Four Solar Terms” (二十四节气)should be put on the Representative List of the Intangible Cultural Heritage of Humanity in 2016 in Ethiopia.

    The Twenty-Four Solar Terms, knowledge of time and practices in agriculture, starts from the Beginning of Spring and ends with the Greater Cold, moving in cycles. It developed through the observation of the sun's annual movement in China. In ancient time, the method of tugui, earth sundial(日暑), was used to measure the shadow of the sun for determining the solar terms.

    The Twenty-Four Solar Terms came into being and developed in close relationship with Chinese agricultural production. At the initial stage of agricultural development, people began to explore the seasonal rules in the agricultural production to meet the needs in seeding, harvesting and other activities. Gradually, they formed the concept of “seed in spring, grow in summer, harvest in autumn and store in winter”. During the spring and autumn periods, the agricultural production was highly influenced by the seasonal changes, thus forming the concept of Solar Terms.

    As a traditional Chinese knowledge system of time with a history of thousands of years, the Twenty-Four Solar Terms clearly expresses the concepts of respect for nature, and harmony between man and nature. Created by Chinese ancestors, it have functioned as a complete set of weather calendar(日历)to guide the agricultural production in China. It has also been introduced into North Korea, Japan and other neighboring countries and still used in Japan. The Chinese heritage has provably influenced the people's way of thinking and behaving and will continue to be an important carrier of Chinese cultural identity.

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.

    Sometimes, the word “green” means young, fresh and growing. For example, a greenhorn is someone who has no experience. In the 15th century, a greenhorn was a young cow or an ox whose horns(角)had not yet developed. A century later, a greenhorn was a soldier who had no experience in war. By the 18th century, a greenhorn had the meaning it has today—a person who is new in a job.

    Someone who is good at growing plants is said to have a green thumb(大拇指). The expression comes from the early 20th century. A person with a green thumb can make plants grow quickly and well.

    Green is also the color used to describe the powerful feeling , jealousy(嫉妒). The green-eyed monster （怪物）is not a dangerous animal from outer space. It is an expression used about 400 years ago by the British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling when someone has something he wants. For example, a young man may suffer from the green-eyed monster if you get a pay rise and he does not.

    In most places in the world, a green light means to move ahead. In everyday speech, a green light means agree to continue with a project.

    Andreea, 18, from Romania, sent a photograph of the view from her window and included a brief (简短的）apology: “Sorry, this picture is plain and boring. No one would like it.”

    At home in New Jersey, US, Coreen Burke, 16, clicked on the same image in her inbox. She saw a village with its old houses, and a distant chimney puffing smoke.

    “Isn't this amazingly different from my country?” she thought to herself.

    Burke saw potential in that photo. She posted it to her blog, Outside My Window，which features a daily snapshot (快照）of someone's window view from different people around the world.

    The concept (理念）is simple: We can all relate to the act of staring through a pane of lass (一块玻璃)，onto the scene on the other side,

    “Maybe if we understood the way people from all over the world live,” she added, “we would get along better than we have been lately.”

    On the sit，Can see Frederic's window in the south of France, looking out on sailboats anchored in a tranquil  harbor(宁静的港湾).0r Virginia's view in Canada, a winter scene with trees laced in white.

    Like most high school students, Burke has yet to travel the world. But she hopes to someday collect many stamps in her passport,starting in Greece and India. In the meantime, however, she's devoting herself to her website.she posted the first window view from Switzerland, a sunset captured (拍摄）by an 18-year-old.Then others came flowing in by email, up to seven a day, from as far as Kazakhstan and Indonesia.

    Contributors are marked on a map on her bedroom wall: A blue dot indicates (表示）their country and a pink dot shows their city, if they provide it. The most responses have come from Europe - Estonia, Poland, Italy, Germany and Sweden, to name a few. She is crossing her Angers that she 11 receive a photo from Africa or Antarctica, which are unrepresented so far.

    And while Burke's become a cyber crusader (斗士）for appreciating the beauty outside our own windows, it will probably come as a surprise to learn that she doesn't actually have a window in her own bedroom. But with the views out of other people's she can enjoy whenever she wants to, she surely doesn't mind.

    The United States Postal Service(LISPS)is offering a way to people who are interested in seeing tomorrow's mail today. The postal service will send consumers images(图像)of their letters, magazines and other mail before they arrive. The new service is called Informed Delivery. It is an attempt to remain competitive in an ever—changing world.

    Postal service officials say the increased use of email, digital messaging services and social media has made it difficult to stay relevant. David Rupert is a media relations specialist who spoke about the competition the agency now faces. Whether you turn on a television or your computer, or people come to your door with different products and services, all of those are competing for consumers' time and energy, he said.

    Interested users are first required to sign up for Informed Delivery. Once registered, the consumer receives a daily email with virtual(虚拟)images of letters or other things to be delivered. The US Postal Service says it can especially help those who have a mailbox at their local post office, so they know when to get their mail：

    Another postal offering is a service that seeks to make advertising-related mail-often called junk mail—more fun. The service uses virtual and augmented reality(虚拟现实和增强现实)to let consumers interact with their junk mail. Many companies put special coding on their advertising, which can give users an interactive experience. Some companies even put virtual reality eyeglasses in the mail to make their ads come to life. Consumers have mixed reactions to virtual and augmented reality advertising. “You can find some good things within junk mail. It is a good idea. We'll see how it works, ”Postal service user Victor Teah said. But Jocelyn Coatney doesn't think it would change her mind about junk mail. “For some, that might be fun. But for me, it would be useless, ”she said.

    We spend a great amount of time listening to music. Most college students listen to music at least three or four times a week, and more than 50 percent of them go to at least one concert per year.

    According to new research, we may be born liking music, because human beings are born to find certain combinations of sounds attractive. For example, young children can recognize a familiar Song even when its key is changed. Similarly, they respond with more emotions to their mothers' singing than to their mothers' speech. Careful analysis of mothers' child-directed songs indicates that each mother's songs remain stable from one "performance" to the next, and this may encourage children's engagement with the songs.

    Research with adults suggests that music catches our attention by activating(激活) brain pathways that are most suited to processing music than to processing other kinds of sound. Specifically, music appreciation relies on the auditory cortex(听觉皮层) on the right side of the brain, which is specialized to process sound that characterizes music-in contrast to the left auditory cortex, which processes the stop-and-start bursts of sound that characterize speech.

    Although some Psychologists remain skeptical about whether music may have powerful effects on our thinking, a number of studies have shown that listening to music can increase people's spatial reasoning abilities Furthermore, It is clear that music can greatly influence our emotions. Personally significant music activates areas of the brain associated with pleasure and reward, the same areas that are activated by sex and good food.

    Researchers do not agree about how humans' abilities to process and enjoy music have come into being. Anyway, the next time you enjoy listening to a piece of music, remember that the most complex pieces of audio equipment are the ones between your headphones.