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.

    The lower East Side is neither rich nor beautiful, but it can be a good place to shop.

    On Sundays, its streets are crowded with visitors and shoppers like these. They are trying to find a coat or a pair of shoes at a good price.

    Most people prefer to shop in the big department stores like Macy's, Gimbel's, or Bloomingdale's because there they can find clothing, furniture, toys, and food in one store.

    Some people like the smaller stores of Greenwich Village or other areas when they are looking for an unusual present.

    Some streets have only one kind of stores. Bracelets (手镯) and rings shine in the windows of Canal Street, and wedding dresses fill the stores of Grant Street. There are streets for furs(皮大衣), and, in one area, there are 600 shops for antiques (古玩)! Fifth Avenue is the most famous place to shop, and it is usually the most expensive. There you can find the latest styles from Paris, Italy, or New York. You can spend thousands of dollars on Fifth Avenue, or you can just window shop and admire the sights for free.

    When Lina was awoken by the sound of thunder, she was alone on the island. The air was cool and bullfrogs croaked. It was that brief moment when the summer sun had set but the stars hadn't yet appeared. Lina rubbed her eyes and looked around.

    "Hello?" she called. "Celia? Marie?"

    There was no response.

    The moon was rising now, shedding light on the island. They had always called it "Forgotten Island" because no one but they seemed to remember its existence. It wasn't on any of the maps they could find, and even the forest rangers didn't know about it. Lina loved that the island, hidden in a heavily-wooded side stream of the river, was a secret between the three friends -her, Celia, and Marie.

    But now Lina was here alone, and it was night. Worse still, it was her own fault.

    "Come on, Lina, let Marie row the boat." Celia had said. Marie was two years older than Lina, but she was a hopeless rower. That's why Lina refused and rowed the boat to the island. The argument that followed the refusal took the usual form. Celia took Marie's side, as she always did. Lina had exploded and yelled at them to just leave. So they got back in the boat and left.

    A bolt of lightning crossed the darkened sky, accompanied by a deafening thunder clap. The storm was here. As the first cold raindrop slid down her neck, Lina's mind returned to her current problem. She was stuck here by herself. She just hoped she didn't become as forgotten as the island. The thought of it sent a chill（寒意）down her back.

    Suddenly, Lina spotted something in the water. It was a boat, and inside it were Marie, Celia, and Marie's dad, who was steering through the fast flowing waters. As the boat approached, they saw Lina waving and the worried expressions on their faces turned to relief.

    In her excitement Lina jumped into the river. Only once she was in the icy water did she remember how fast the water was moving. Luckily a strong arm reached into the water and pulled her out. She smiled weakly at Marie's dad and, without a word, hugged Celia and Marie. They didn't seem to mind becoming wet.

    Coming to the end of my assistantship in Barcelona, I start to think about what the future might hold.

    It's been seven months and a few days since I arrived here and things have changed so much in what some might call a short period of time. When I first arrived in Terrassa I was excited and nervous to start a new adventure in a country I love. The first few days seem so long ago now, trying to find a place to live, organizing my timetable with the schools, meeting new people.

    However, a fortnight later, the excitement started to fade and I began to spend more than a few nights thinking about family and friends back home, wondering if I should be there with them. Everything started to change after meeting some new friends and spending good time with them, eating together and seeing new places as a group. I suppose we should never forget how important it is to have good people in your life, because they can make a difference.

    Coming back to Terrassa after visiting home for Christmas felt like returning to a second home, to a place that was mine with people I cared about. Things got even busier and more people came into my life; new friends, romance and a whole lot of good food flowed by in what seems to have been weeks, not months.

    Now, looking forward, there are some decisions to make. Should I return home to Scotland and move on with life there or try to extend my time here, perhaps make it something permanent? Experiencing other cultures or learning about the world is such an important thing to do if you have the means.

    My advice from my experience so far is to travel and try new things whenever you get the opportunity. You may find somewhere you were always supposed to be.

    A California family drives a car that could help protect the environment. When Jon and Sandy go to the store or to their daughters' soccer games, they drive in high-tech style. They drive a $1 million, fuel-cell-powered car. It may be the world's most expensive car and one of the most environmentally friendly cars. The FCX is the first fuel-cell-powered car to be used by a family anywhere in the world. The FCX uses hydrogen and oxygen for fuel. Car makers have been working to develop vehicles that are better for the environment. They are developing cars that use fuel other than gasoline.

    And then what is fuel cell technology? Fuel cell technology works by changing the chemicals hydrogen and oxygen into water. This process produces electricity, and water vapor which comes out of the exhaust pipe. Most cars release dangerous gases such as carbon monoxide and carbon dioxide. Many scientists say these gases are major contributors to global warming. “The FCX is driven just like any other vehicle on the road, but without the gases which pollute the environment,” scientists say. Fuel cell technology has been around since the 1800s, but scientists have yet been to perfect it. They say it may take years before the technology is ready for widespread use. Another earth-friendly car is already on the market. Hybrid cars use both gasoline and an electric motor. They are becoming more popular with customers because they cut pollution and improve fuel efficiency.

    For several months, Cara has been working up the courage to approach her mom about what she saw on Instagram. Not long ago, the 11-year-old girl, like all the other kids in this story, discovered that her mom had been posting her photos for much of her life." I've wanted to bring it up. It's strange to see myself up there，and sometimes there are pictures I don't like of myself," she said.

    Like most other modem kids, Cara grew up immersed in social media. While many kids may not yet have accounts themselves, their parents, schools, sports teams, and organizations have been organizing an online presence for them since birth. The shock of realizing that details about your life have been shared online without your permission or knowledge has become an important experience in the lives of many teenagers. Recently a parenting blogger (博主)wrote in a Washington Post essay that despite (不顾)her 14-year-old daughter's horror at discovering that her mother had shared years of highly personal stories and information about her online, she simply could not stop posting on her blog and social media. The writer said that promising her daughter that she would stop posting about her publicly on the Internet would mean shutting down a vital part of myself, which isn't necessarily good for me or her." average parents do the same. There's even a special word for it: sharenting. Almost a quarter of children begin their digital lives when parents upload their photos to the Internet, according to a study conducted by the Internet-security firm AVG. The study also found that 92 percent of kids under the age of 2 already have their own unique digital identity.