Many people would answer the question of what makes us human by insisting that we are cultural beings. There is no doubt that we are. But one definition of culture is the totality of traditions acquired in a community by social learning from other individuals, and many animal species have traditions. Can we then say that some animals are cultural beings too?
One approach to study culture in animals is the so-called Method of Exclusion (排除), in which scientists investigate behavioral variations across populations of one species. In a famous study, scientists learned that chimpanzee (黑猩猩) behaviors were socially passed on as they were present at some sites but not at others, despite having same ecological settings. For example, chimpanzees in Tai National Park in Ivory Coast are well-known for their nut-cracking skills. Chimpanzees in Gombe national part in Tanzania, on the other hand, do not crack nuts, although nuts exist in their environment too.
However, when applying the Method of Exclusion, one has to be very careful. There are other factors that could also explain the pattern of behavioral evaluation. For example, some of the chimpanzee techniques scientists evaluated occur in only one of the three subspecies. So it’s quite possible that these behaviors also have an innate component. This would mean that one chimpanzee subspecies uses a new technique not out of cultural tradition, but because the behavior is fixed to specific genes. Another factor that has to be excluded is of course the environment Chimpanzees in Mahale do not fish algae (水藻), simply because algae does not exist there.
But when we exclude all the variations that can be explained by genes or environment, we still find that animals do show cultural variations. Does that mean there is no real difference between them and us after all? Not exactly: There is a fundamental difference between human and animal culture. Only humans can build culturally on what generations before us have learned. This is called “cumulative culture”. We don’t have to keep reinventing the wheel. This is called the “ratchet (棘轮) effect”. Like a ratchet that can be turned forward but not back, people’s cultural techniques evolve.
It is likely that behaviors we see today in chimpanzee cultures could be invented over and over again by individual animals themselves. In contrast, a child born today would not be able to invent a computer without the knowledge of many past generations.
What can we learn from the passage?
| A．Cumulative culture is what sets humans apart from animals. |
| B．Culure in animals is as worthy to be valued as human culture. |
| C．Animals don’t have the ability to invent behaviors in a community. |
| D．The “ratchet effect” decides if humans can build on past experiences. |
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Which can be a suitable title for the text?
| A．Cockatoos: Quick Error Checkers | B．Cockatoos: Independent Learners |
| C．Cockatoos: Clever Signal-Readers | D．Cockatoos: Skilful Shape-Sorters |
【推荐2】When a leafy plant is under attack, it doesn’t sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.
Scientists have found that all kinds of plants give out VOCs when being attacked. It’s a plant’s way of crying out. But is anyone listening? Apparently. Because we can watch the neighbours react.
Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.
In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.
Does this mean that plants talk to each other? Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true, intentional back and forth.
Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的) than the world we can see and hear. Our senses are weak. There’s a whole lot going on.
What can we infer from the last paragraph?
| A．The word is changing faster than ever. |
| B．People have stronger senses than before |
| C．The world is more complex than it seems |
| D．People in Darwin’s time were imaginative. |
【推荐3】After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf – grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park’s red foxes, and completely drove away the park’ s beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down,while beavers and red fores have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
What does the underlined word “displaced” in paragraph 2 mean?
| A．Tested. | B．Separated. |
| C．Forced out. | D．Tracked down. |
【推荐1】King Canute couldn’t stop the ocean’s tide from rolling in — can Africa hold back the desert?That’s certainly what the continent is tying to do with its proposed “Great Green Wall”, 800km (almost 5,00 miles) worth of trees that officials hope will stop the advancement of the Sahara Desert, which has been rapidly expanding southward.
The idea was introduced in the 1970s when the once-rich region turned barren (贫瘠的) due to climate change and intensive land use. But it’s not a new idea; China has its own desert vegetation project to hold back the Gobi Desert! Thanks to the Chinese plan, the African project aims to plant 100 million hectares of trees by 2030 across the entire Africa. The initiative is a decade in, and around 15% completed, and there have already been benefits for many communities and wildlife. It’s bringing life back to the continent’s degraded landscapes at an unprecedented scale, providing not only food security and jobs but a reason to stay for the millions who live along its path.
The creators of the wall hope it will bring an urgently needed solution to the threats facing the African continent, creating 10 million jobs in rural areas, as well as preventing 250 million tons of carbon. The initiative is Africa-driven, which for those on the continent, is vital, and may hold the key to success. “The Great Green Wall…is about ownership, and that has been the failure of development aid because people were never identified with it,” said Elvis Paul Tangam, African Union Commissioner for the Sahara and Sahel Great Green Wall Initiative.“But this time they identify. This is the very thing of us!”
The wall may seem like a moonshot, but all the best ideas usually are. As Thomas Sankara, former president of Burkina Faso said in 1985, “You cannot carry out fundamental change without a certain degree of madness. The courage to turn your back on the old formulas, the courage to invent the future.”
What does “us” underlined in Paragraph 3 refer to?
| A．African Unions. | B．All advocates. | C．Land owners. | D．All Africans. |
【推荐2】When the explorers first set foot upon the continent of North America, the skies and lands were alive with an astonishing variety of wildlife. Native Americans had taken care of these precious natural resources wisely. Unfortunately, it took the explorers and the settlers who followed only a few decades to decimate a large part of these resources. Millions of waterfowl ( 水 禽 ) were killed at the hands of market hunters and a handful of overly ambitious sportsmen. Millions of acres of wetlands were dried to feed and house the ever-increasing populations, greatly reducing waterfowl habitat.
What does the underlined word “decimate” mean in the first paragraph?
| A．Acquire. | B．Export. |
| C．Destroy. | D．Distribute. |
【推荐3】We are the products of evolution, and not just evolution that occurred billions of years ago. As scientists look deeper into our genes(基因), they are finding examples of human evolution in just the past few thousand years. People in Ethiopian highlands have adapted to living at high altitudes. Cattle-raising people in East Africa and northern Europe have gained a mutation(突变) that helps them digest milk as adults.
What does the author want to tell us by the examples in paragraph 1?
| A．Environmental adaptation of cattle raisers. |
| B．New knowledge of human evolution. |
| C．Recent findings of human origin. |
| D．Significance of food selection. |
【推荐1】Because making the leashes now is a full-time job, Tsao has asked his friends, family, and neighbors for help. “We have made and sold over a thousand leashes, which add up to over 10,000 feet of rope being saved from landfills,” says Tsao. The leashes come in various colors. There are also half-price leashes made from ropes with slight imperfections. These start at $ 7.49 while most other leashes start at $ 14.99. To date, the nonprofit has raised more than $35,000. Much of this money has been donated to animal shelters.
What is the last paragraph intended to tell us?
| A．Tsao succeeds in the leash business. |
| B．Animal protection gains more attention. |
| C．More people volunteered to help Tsao. |
| D．Leashés are very popular, with pet owners. |
【推荐2】Live with roommates? Have friends and family around you? Chances are that if you’re looking to live a more sustainable lifestyle, not everyone around you will be ready to jump on that bandwagon.
I experienced this when I started switching to a zero-waste lifestyle five years ago, as I was living with my parents, and I continue to experience this with my husband, as he is not completely zero waste like me. I’ve learned a few things along the way though, which I hope you’ll find encouraging if you’re doing your best to figure out how you can make the change in a not-always-supportive household.
Zero waste was a radical lifestyle movement a few years back. I remember showing my parents a video of Bea Johnson, sharing how cool I thought it would be to buy groceries with jars, and have so little trash! A few days later, I came back with my first jars of zero waste groceries, and my dad commented on how silly it was for me to carry jars everywhere. It came off as a bit discouraging.
Yet as the months of reducing waste continued, I did what I could that was within my own reach. I had my own bedroom, so I worked on removing things I didn’t need. Since I had my own toiletries (洗漱用品), I was able to start personalizing my routine to be more sustainable. I also offered to cook every so often, so I portioned out a bit of the cupboard for my own zero waste groceries. Perhaps your household won’t entirely make the switch, but you may have some control over your own personal spaces to make the changes you desire.
As you make your lifestyle changes, you may find yourself wanting to speak up for yourself if others comment on what you’re doing, which can turn itself into a whole household debate. If you have individuals who are not on board, your words probably won’t do much and can often leave you feeling more discouraged.
So here is my advice: Lead by action.
1. What was the attitude of the author’s father toward buying groceries with jars?| A．He disapproved of it. | B．He was favorable to it. |
| C．He was tolerant of it. | D．He didn’t care about it. |
| A．She is quite good at cooking. | B．She respects others’ privacy. |
| C．She enjoys being a housewife. | D．She is a determined person. |
While at UCD I lived on campus, which allowed me to throw myself into everything the university has to offer. I was given the opportunity to work with Geraldine Butler’s lab. I loved it so much that I ended up heading to the lab almost every weekday, whenever I wasn’t attending my always-interesting classes in pharmacology. After lab, I enjoyed a variety of after-school activities—that was certainly a new experience for me.
Living in Dublin provided a great opportunity for seeing the rest of Ireland and Europe. I spent my weekends and spring break traveling to every corner of the island, amazed at all of the history and natural beauty. I was also able to visit the UK, the Netherlands, Belgium, Denmark and Sweden. After every trip, it was nice to return to friendly Dublin and head out with my roommates to one of our favorite pubs.
I would highly recommend studying abroad at UCD. I learned so much from my courses and my research project and had a wonderful time exploring Ireland. I can’t wait to come back!
1. Where is the author when he is writing the passage?
| A．At Princeton University. | B．At UCD. |
| C．In the UK. | D．In Sweden. |
| A．He was attracted by Ireland and Irish culture. |
| B．There was a chance for him to change his major. |
| C．It offered visiting students a guided research project. |
| D．The staff in the Science office were friendly and helpful. |
| A．Excited. | B．Upset. |
| C．Worried. | D．Tired. |
| A．A Scientific Project. | B．Colorful School Life. |
| C．Live on Campus. | D．Study Abroad at UCD. |
