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。

    In 1841, a book was published which astonished the world. It was called “Incidents of Travel in Central America, Chiapas and Yucatan”. The author John Loud Stephens had just returned from a long, difficult and dangerous journey through the thick rain forest of southern Mexico and Guatemala. He had once been there with Frederick Catherwood, an architect and artist, to search for the remains of a lost civilization known as the Mayas(玛雅). Very little was known about the Mayas at that time, but Catherwood's drawing in the book showed incredible cities with temples, pyramids and other buildings as impressive as those of their northern neighbors, the Aztecs. These cities, however, were deserted. The inhabitants(居民) had disappeared almost a thousand years before.

    Since that time, far more has been learned about this remarkable civilization. The Mayas had a highly-developed system of government and of agriculture, as well as an incredibly accurate system of measuring time. They were also wonderful engineers capable of moving huge blocks stone long distances and cutting them to accurate shapes and sizes.

    And yet although the Mayas knew about the wheel, they never used it. Neither did they use metals other than copper. What is ever more surprising is that they suddenly abandoned many of their cities and built new ones in the jungle. Some time around AD 900, Mayan civilization collapsed(崩溃). By the year 1200, their last great capital, Chichen Itza, was deserted.

    Who were these strange people and the even stranger gods they worshipped? What brought about their sudden and mysterious collapse? Some writers have tried to prove that the Mayas had contact with visitors from space and even that they themselves came from another planet. Some people believe that their civilization came to an end because the Mayas never developed a proper resistance to local germs and diseases. All we really know is that when the first Europeans appeared off their coast in 1517, this great and mysterious culture was only a memory.

    Top Sites to See in New York

    Central Park

    For more than 150 years, visitors have come to Central Park's 843 green acres in the heart of Manhattan. Since 1980, the Park has been managed by the Central Park Conservancy, in partnership with the public. You can visit the official website of Central Park to learn more about Park happenings and activities and to learn how to help Central Park.

    Telephone: 212-310-6600

    Location: 59th to 110th Street, Manhattan Borough, from Central Park West to 5th Avenue, New York City,                 NY10022

    Open Hours: 06: 00-23:00

    The National 9/11 Memorial Museum

    The national 9/11 Memorial & Museum is a place of remembrance honoring those who lost their lives in the terrorist attacks of September 11,2001. The 9/11 Memorial Museum displays Monumental artifacts linked to the events of 9/11, while presenting stories of loss, sympathy and recovery that are central to telling the story of the 2001 attacks and the consequence. It also explores the global impact of 9/11 and its continuing significance.

    Telephone: 212-312-8800

    Location: 180 Greenwich St, World Trade Center, New York City, NY 10007

    Open Hours: 09: 00-20: 00

    The Metropolitan Museum of Art

    At New York City's most visited museum and attraction, you will experience over 5,000 years of art from around the world. The Met is for anyone as a source of inspiration, insight and understanding. You can learn, escape, play, dream, discover and connect.

    Telephone: 212-535-7710

    Location: 1000 5th Avenue, New York City, NY 10028-0198

    Open Hours: 10: 00-17: 30

    If a woman has an extra piece of cake，don 't blame it on greed, blame it on her brain.

Scientists have found that women's brains react to food very differently — and much more strongly — than men' s. Academics found that decades of dieting pressure on women and advertising have programmed certain parts of the female brain to react strongly when faced with any kind of food. Men，on the other hand, are not usually as obsessive (着迷的）about what they eat.

    Dr. Rudolf Uher and his colleagues at the Institute of Psychiatry in King's College London used brain scanning technology，known as functional magnetic resonance imaging ( FMRI)，to look at the brains of eighteen men and women.

    The volunteers were given images of food to look at, as well as food to taste. Their brain reactions were observed by the scientists. They found that the female brains reacted much more strongly than those of males. The same reaction did not happen when they were shown non-food images. The team believe this means women think more about food than men tend to. Dr. Uher said, “This could be related to biological differences between men and women. But the more likely explanation is that women have a more complicated reaction to food because of social pressure. ”

Professor Carey Cooper，psychology and health professor at Lancaster University，said，“for centuries women have had a providing role — preparing and cooking food for their families. And it's part of that role to make sure the food is safe. They will therefore be much more sensitive to food than men are, and I would not be surprised if that was now built into their DNA. If the female brain react to food because it historically has developed neural (神经的）pathways to do this, then food will be the way they express their stress. Food actually，is a comfort for women. ”

    But other experts have said that more research must be done before the results can be proved. American scientist Angelo del Parigi of the John B. Pierce Laboratory in New Haven, Connecticut, said, “Looking at an FMRI alone cannot make sure whether the stronger reaction in women is due to innate (天生的）differences or a learned process. ''

    Two years ago, something happened that changed the way I look at the world. On my birthday, my grandfather, walking home with his hands full of groceries, fell and hit his head on the sidewalk. Just as we were leaving to meet him for dinner, we got the call that he was in the hospital. At first, I thought nothing of it, but when I heard the whole story, I couldn't believe it. He hit his head so hard that he had a blood clot in his brain and it had to be operated on immediately. Everyone thought he would die.

    Although my grandfather survived emergency brain surgery, he had complications (后遗症). He could hardly talk and he couldn't walk. Shortly after, he was admitted to a nursing home. Today, he lives at home with my grandmother and is doing much better, but this isn't about him. It's about what I saw at that nursing home.

    I saw something that many people haven't seen, and some do often choose to ignore it, I saw more sadness in those days visiting the nursing home than I thought. In that one place were hundreds of old people who were alone and forgotten.

    So what as to be done with the situation of the old? This is not an easy question, but something must be done. Perhaps groups in the community could assign each member to one nursing home patient with whom they could keep in regular contact. Maybe a school could focus on a nursing home and send cards, pictures and letters to residents. If periodic visits were arranged, I'm sure that for some, if not many, those students would be the only visitors they had all month. These are just a few ideas; we all need to work together.

    I hope everyone to tour a local nursing home I further expect you to do something about it. You'll brighten someone's day, or maybe even his or her life.

    Humans were designed to stand upright. And yet in this modern world, too many of us spend our days with our heads lowered for a simple reason: we're staring at the tiny screen of a smart phone.

    People spend an average of 2 to 4 hours each day with their neck bent while shooting off emails or texts. That's 700 to 1,400 hours a year. The success of social media has led to a rapid development of bad smart phone posture(姿势).

    The average adult head weighs 10 to 12 pounds when it's in the upright position. However, because of the gravity, bending your head at a 15 degree puts 27 pounds of pressure on your spine(脊椎); a 30 degree neck bend could equal 40 pounds of pressure; a 45 degree bend adds the force of 49 pounds, according to the research from Dr. Kenneth Hansraj from New York. These stresses may lead to many problems.

    It's no secret that correct posture is better for your back. According to the researchers, good posture is described as ears aligned(成一条直线) with the shoulders. In proper alignment, spinal stress disappeared. It is the best position for the spine. Standing tall doesn't just make you look better; it improves your health, too. Other studies have found good posture has even been connected to ways of behaving. People who have poorer posture often have poorer physical and emotional health.

    The researchers describe bad posture as “the head in a forward position and the shoulders dropping forward in a rounded position”. Bad posture has been connected to many medical problems, including headaches and other problems, depression and heart disease. This is why Hansraj said it's important to be mindful of your smart phone posture. Though it is nearly impossible to avoid the technologies that cause these problems, people should make an effort to look at their phones with a correct posture.

    Vacation in the U. S. usually means slower days, and no school teachers know, however, that vacation means students will likely fall behind, and forget things they learned during the year. Simon Vanderpool, a special education teacher in Lexington, Kentucky, decided to do something about it.

    He started a program called Books and Barbers. Children go to the barber, choose a book and read out loud while the barber cuts their hair. The child gets a sticker and can take the book home. And there is an added bonus: money. The kids get paid to read.

    Vanderpool says barber shops are places where kids can feel comfortable. "Once a student feels comfortable, that's whenever the brain opens up, and that they are able to start focusing on nothing but learning." Amir Shalash owns a barber shop. But he is doing more than cutting children's hair. He is listening to them read, and helping them with their reading.

    Most of the children getting haircuts at barber shops are boys. Vanderpool's idea was to do more than just help them with reading and money. The teacher wants to help kids who are growing up in a home without a father liike he did. Also, I created the program in order to provide a positive mentor(指导者）for the kids that go into the barber shop, and are able to have someone that they can rely on and they can trust in, and just build a bond between the two of them." Shalash says he and his fellow barbers like being mentors.

    "The biggest thing is that we try to influence as many kids as we can, and that was my whole intention of it."