These days, it's easy to fly across oceans for vacation. Centuries ago, however, crossing the open seas 
required thorough and accurate planning, handmade boats, and courage. Scientists and historians have long been looking for clues to explain who crossed which oceans first. When it comes to the trip between Polynesia (玻利尼西亚中太平洋群岛) and South America, chickens may have been among the first ocean voyagers, according to new evidence.
After studying an ancient chicken bone, anthropologists (人类学家) from the University of Auckland in New Zealand now say that people and chickens traveled from Polynesia to what is now Chile (智利) by about 620 years ago. By then, the Inca people were already living in South America, but the Polynesians would have been the first to get there by sea. Previous theories claimed that European explorers and their chickens sailed to South America first -- but those voyagers didn't arrive until about a century later.
In 2002, archaeologists dug up 50 chicken bones from a site in Chile called El Arenal. The team from New Zealand analyzed one to these bones. According to their calculations, the bone is about 650 years old.
The researchers also compared the genetic material, or DNA, from the South American chicken bone with DNA from 11 chicken bones that had been found on the Polynesian islands of Tonga and American Samoa. These islands are 6,000 miles west of Chile. The bones found on the Polynesian islands are been 600 and 2,000 years old.
Results of the comparisons showed that the chicken bones from both the Polynesian and South American sites had part of DNA in common. The researchers found the same part of DNA in feathers of two living chickens in Chile that belong to a modem breed that lays blue eggs. That DNA evidence suggests a close relationship among the chickens.
"However, the weight of scientific evidence is now behind the hypothesis (假设) that it was seafaring ( 航海) Polynesians who sailed from the islands to South America and returned," says archaeologist Patrick V. Kirch of the University of California, Berkeley.
What is the passage mainly about?
| A．It was difficult for ancient people to travel between Polynesia and South America. |
| B．The first people who lived in Chile and Polynesia. |
| C．Valuable chicken bones have been found in Chile. |
| D．Chickens -- the first to travel between Polynesia and South America. |
When did the first European explorers reach South America?
| A．About 520 years ago. | B．About 2.000 years ago. |
| C．About 600 years ago. | D．About 620 years ago. |
People found that chickens were among the first to travel from Polynesia to South America by _____.
| A．comparing the colors of eggs laid by chickens from the two places |
| B．comparing the DNA of chicken bones dug up on the Polynesian islands and that of the chicken bones from South America |
| C．studying some previous theories |
| D．asking the natives of South America |
What do we learn from the passage?
| A．European explorers and their chickens were the first to sail to South America. |
| B．Chickens in South America have the same ancestors as those in Polynesia. |
| C．In ancient times, a 6,000-mile channel separated Polynesia from South America. |
| D．Before the Polynesians arrived in South America, the Inca people had lived there. ' |
With the development of science and technology, new inventions, especially new electronic products, have made people’s lives easy and convenient. But as the saying puts: A coin has two sides.
One day, I was walking in the park with a friend and his cell phone rang, interrupting our conversation. There we were, walking and talking on a beautiful sunny day and…I became invisible, absent from the conversation.
The telephone used to connect you to the absent. Now it makes people sitting next to you feel absent. Why is it that the more connected we get, the more disconnected I feel? Every advance in communications technology is a tragedy to the closeness of human interaction. With email and instant messaging over the Internet, we can now communicate without seeing or talking to one another. With voice mail, you can conduct entire conversations without ever reaching anyone. If my mom has a question, I just leave the answer on her machine.
As almost every contact we can imagine between human beings gets automated, the alienation(疏远) index goes up. You can't even call a person to get the phone number of another person any more. Directory assistance is almost always fully automated.
Pumping petrol at the station? Why say good morning to the attendant when you can swipe(刷)your credit card at the pump and save yourself the bother of human contact?
Making a deposit at the bank? Why talk to a teller who might live in the neighborhood when you can just insert your card into ATM?
Pretty soon you won’t have the burden of making eye contact at the grocery shop. Some supermarket chains are using a self-scanner so you can check yourself out, avoiding those check-out people who look at you and ask how you are doing.
I am not against modern technology. I own a cell phone, an ATM card, a voice mail system, and an email account. Giving them up isn't wise…they're a great help to us. It's some of their possible consequences that make me feel uneasy.
More and more, I find myself hiding behind e-mail to do a job meant for conversation. Or being relieved that voice mail picked up a call because I didn't really have time to talk. The communications industry devoted to helping me keep in touch is making me lonelier.
So I've put myself on technology restriction: no instant messaging, with people who live near me，no cell phoning in the presence of friends, no letting the voice mail pick up when I'm at home.Which of the following would be the best title of the passage?
| A．The Advance of Communications Technology |
| B．The Consequences of Modern Technology |
| C．The Process of Communications Revolution |
| D．The Automation of Modern Communications |
Paragraphs 5 to 7 are listed as examples, which show that the use of modern communications is ___________.
| A．encouraging | B．disappointing |
| C．satisfying | D．embarrassing |
The passage implies that _______________.
| A．modern technology is bridging the people |
| B．modern technology is separating the people |
| C．modern technology is developing too rapidly |
| D．modern technology is interrupting our lives |
What does the writer think to do with the modern technology?
| A．We may use them no matter what others are doing. |
| B．We can throw them away and return to the ancient. |
| C．We can be far away from them forever. |
| D．We can use them less and communicate with the people around us. |
You may have experienced the annoyance of being fined because of parking illegally or finding your car towed away(拖走)after leaving it parked somewhere for a couple of minutes．But now a high-tech car sticker that’s designed to be stuck to a car’s windscreen could help motorists avoid such a situation．
The TowStop sticker sends a text message to a driver when touched by a traffic policeman，to allow motorists to send a reply and give them time to move their cars immediately．Frankfurt-based IT consultant，Daniel Kalliontzis，came up with the idea and is raising money to put his ￡43 sticker into production．
Car owners can put the sticker inside their car’s windscreen，having set it up with key information，such as their phone number．The slim design will include a sensor(传感器)that，when touched by a traffic policeman，will send a text message warning a driver of a possible fine．The driver could then type a reply for the policeman using a smartphone，which will appear on the sticker’s screen．
The smart sticker system will rely on the good will of traffic policemen and in a way，a German law．The law states：an officer has to choose the most efficient and inexpensive way for the car owner to remove the vehicle．It could be cheaper for the government to call the driver than to tow his car．
Mail Online asked the Department of Transport whether the sticker could be used in the UK in a similar way．A spokesman said，“In England there is no legal duty to warn the motorist before issuing the ticket．However，a policeman does have the discretion not to issue a ticket if he doesn’t think the situation is that bad or he just wants to issue a warning．”
So far，Mr．Kalliontzis has raised just over￡2,362 of his￡39,381 goal．If he manages to raise the money，the stickers will be shipped in June 2015．But it appears that car owners using the smart system could get some unnecessary warning messages，because anyone could touch the smart sticker．The author wrote the third paragraph to _______________．
| A．explain how a smart car sticker works |
| B．advise drivers to buy a car sticker |
| C．show the importance of a sensor |
| D．tell drivers how to park a car |
We may infer from the text that in Britain _______________．
| A．car owners don’t have to worry about a parking ticket |
| B．smart car stickers wouldn’t work as well as in Germany |
| C．traffic policemen prefer to call a driver rather than tow his car |
| D．the Department of Transport thinks highly of smart car stickers |
The underlined word “discretion” in Paragraph 5 can best be replaced by“____________”．
| A．trouble | B．pressure | C．freedom | D．opportunity |
What would be the best title for the text?
| A．Daniel Kalliontzis — a great inventor |
| B．Environment-friendly car stickers |
| C．Parking systems in Europe |
| D．End of the parking ticket? |
I was 16 when my father finally decided he would send me to wilderness camp for several months. He had threatened to do it many times before, but my mother had always managed to prevent him from doing so. This time he insisted on doing it.
The latest incident was the last straw. Impulsively(冲动地), I had pushed Mr. Ford, my math teacher, down a flight of steps at school. He broke his arm in two places. Anyway, he had agreed not to accuse me as a favor to my dad, who was in the middle of a tight race for sheriff(执法官) in our town. But my reckless behavior had my dad’s closest advisor talking.
“John, he’s your son and he’s a kid, but he is dragging you down,” I heard Jake Hutch tell my dad through his closed office door the night after I pushed Mr. Ford. “If you can’t make your son obey the rules, how can you make the law obeyed in this town?”
So, off to Pisgah National Forest I went. I imagined hours of untold abuse at the hands of some strong sergeants(军士). I was determined no to be broken. I was who I was.
Nearly every day for six months, a small group of other troubled teens and I carried our 30-pound backpacks on a difficult journey covering about 10 miles. We hiked in a rough wilderness that seemed untouched by civilization.
Our sergeants were firm but kind, not frightening as I had imagined. We learned how to make a fire without matches and create a shelter with branches and grass. We learned which plants were safe to eat out in the wild. I felt myself change. I was calm and often reflective. My old, impulsive self was gone.
One morning, six months later, my dad came to pick me up. I ran to hug him and saw relief and love in his eyes.
“So what’s it like being sheriff?” I asked on the ride home.
“I lost the race, Danny,” he said.
“I’m sorry, Dad.” I knew my behavior probably had a lot to do with the defeat.
Dad squeezed my shoulder and brought me close. “As long as I don’t ever lose you, I’m okay.”The author was finally sent to wilderness because _____.
| A．he could learn how to survive in the wild |
| B．his teacher insisted on giving him a lesson |
| C．he pushed his math teacher down the stairs |
| D．his mother feared that he would be accused |
The underlined word “reckless” in Paragraph 2 probably means ______.
| A．selfish | B．careless | C．rude | D．reasonable |
What can we learn about the author from the passage?
| A．He changed a lot after the camp. |
| B．He was not satisfied with his life in the camp. |
| C．He was still what he used to be after the camp. |
| D．He made enemies with other troubled teens at the camp. |
How did the author’s father feel at the end of the story?
| A．Grateful. | B．Annoyed. |
| C．Disappointed | D．Relieved |
Many tourists visiting the USA on vacation enjoy shopping for bargains. You can find many bargains in the US if you know where to shop and how to take advantage of the competitive sales.
Department stores offer good quality and high fashion
Macy’s department stores offer a wide selection of merchandise(商品), including fashion clothing, luggage and jewelry. They normally offer good quality merchandise, well known brands and the latest fashions, but not low quality products at bargain prices. They frequently have seasonal sales with attractive discounts. At such times, you can get high quality or fashion merchandise at bargain prices.
General merchandise stores offer affordable quality
Sears and JCPenny are two large national chains with stores across the US. They are similar to department stores but they do not offer high fashion merchandise or luxury(奢侈的) brands. Instead, they feature good quality merchandise at affordable prices. They are particularly known for their selection of children's clothing and domestic goods. Sears is famous for its selection of tools and garden products.[]
Discount stores sell at low prices
Discount stores sell some good quality merchandise at affordable prices and some lower quality merchandise at very low prices. If you are not looking for the latest fashions, famous brands, or the best quality, you can find some very inexpensive merchandise at a discount store. Some national discount chains with stores across the US are K-Mart, Wal-Mart, Target and Caldor.
Outlet stores are a bargain hunter's wonderland
Outlet stores or factory outlets sell high quality merchandise and well-known brands at discounted prices. They usually offer merchandise with slight flaws(瑕疵) and remainders from the last season or the previous year. They do not have end-of-season sales like the department stores, as their merchandise is always discounted 20% to 40% below department store prices. If you want to buy a new dress that is fashionable, you should go to _______.
| A．Sears | B．Wal-Mart |
| C．JCPenny | D．Macy’s |
What is a feature of general merchandise stores?
| A．They normally offer the best quality merchandise. |
| B．They offer well-known brands and the latest fashions. |
| C．They offer goods at acceptable prices. |
| D．They can offer a special discount. |
Which of the following is NOT true about outlet stores?
| A．You can purchase goods with excellent quality and reasonable prices. |
| B．They can offer goods from last year. |
| C．You will get goods with serious quality problems. |
| D．Their merchandise is always discounted below department store prices. |
It just may be the world’s most costly vacuum cleaner ( 吸尘器). The price of CleanSpace One is eleven million dollars. But yet, it has a big job to do. Recently, researchers in Switzerland said they planned to build this new cleaning machine.
CleanSpace One will not be for use in homes or businesses. It will be shot into space to help remove thousands of pieces of space junk floating around up there.
Last year, we reported on the problem of space junk. Over time, many unused spacecraft have hit each other far above the Earth. Big pieces break into thousands of small pieces. Sometimes they fall back into the atmosphere (大气层) and burn up. But when they do not, it creates big problems.
Scientists fear that if something is not done to remove these objects, it may soon become too dangerous to send people and machines into space. There is a large chance that they might hit some of this junk. So that is why the Swiss researchers are developing the new machine.
CleanSpace One is not really a vacuum cleaner. It will not be used to take away space junk. But scientists plan to move it close to an old satellite that is no longer being used. Then a claw-like instrument will catch the satellite, and force it back through the atmosphere. There, the satellite will be destroyed by the heat of friction (摩擦) with the air.
Researchers say that all they need to do is slow down the speed of some of these unwanted objects. Once they begin to move more slowly, they will fall back to the Earth. There is little chance that they will fall through the atmosphere and harm the people or things below.Space junk is created when .
| A．unused spacecraft hit each other |
| B．people in space throw away rubbish |
| C．a new spaceship is sent up |
| D．an old spaceship creates friction with the air |
What’s the danger of space junk?
| A．It will pollute space. |
| B．It will hurt people on the Earth. |
| C．It will hit a spaceship. |
| D．It will burn in the atmosphere. |
Unwanted objects will fall back to the Earth when .
| A．they are made to move slowly |
| B．they meet other objects in space |
| C．they are not used for years |
| D．they are near the atmosphere |
The passage is most probably a .
| A．science research paper | B．science fiction story |
| C．newspaper ad | D．science news report |