1 . On March 7, 1907, the English statistician Francis Galton published a paper which illustrated what has come to be known as the “wisdom of crowds” effect. The experiment of estimation he conducted showed that in some cases, the average of a large number of independent estimates could be quite accurate.
This effect capitalizes on the fact that when people make errors, those errors aren’t always the same. Some people will tend to overestimate, and some to underestimate. When enough of these errors are averaged together, they cancel each other out, resulting in a more accurate estimate. If people are similar and tend to make the same errors, then their errors won’t cancel each other out. In more technical terms, the wisdom of crowds requires that people’s estimates be independent. If for whatever reasons, people’s errors become correlated or dependent, the accuracy of the estimate will go down.
But a new study led by Joaquin Navajas offered an interesting twist (转折) on this classic phenomenon. The key finding of the study was that when crowds were further divided into smaller groups that were allowed to have a discussion, the averages from these groups were more accurate than those from an equal number of independent individuals. For instance, the average obtained from the estimates of four discussion groups of five was significantly more accurate than the average obtained from 20 independent individuals.
In a follow-up study with 100 university students, the researchers tried to get a better sense of what the group members actually did in their discussion. Did they tend to go with those most confident about their estimates? Did they follow those least willing to change their minds? This happened some of the time, but it wasn’t the dominant response. Most frequently, the groups reported that they “shared arguments and reasoned together”. Somehow, these arguments and reasoning resulted in a global reduction in error. Although the studies led by Navajas have limitations and many questions remain, the potential implications for group discussion and decision-making are enormous.
1. What is paragraph 2 of the text mainly about?A.The methods of estimation. | B.The underlying logic of the effect. |
C.The causes of people’s errors. | D.The design of Galton’s experiment. |
A.the crowds were relatively small | B.there were occasional underestimates |
C.individuals did not communicate | D.estimates were not fully independent |
A.The size of the groups. | B.The dominant members. |
C.The discussion process. | D.The individual estimates. |
A.Unclear. | B.Dismissive. | C.Doubtful. | D.Approving. |
2 . When John Todd was a child, he loved to explore the woods around his house, observing how nature solved problems. A dirty stream, for example, often became clear after flowing through plants and along rocks where tiny creatures lived. When he got older, John started to wonder if this process could be used to clean up the messes people were making.
After studying agriculture, medicine, and fisheries in college, John went back to observing nature and asking questions. Why can certain plants trap harmful bacteria (细菌)? Which kinds of fish can eat cancer-causing chemicals? With the right combination of animals and plants, he figured, maybe he could clean up waste the way nature did. He decided to build what he would later call an eco-machine.
The task John set for himself was to remove harmful substances from some sludge (污泥). First, he constructed a series of clear fiberglass tanks connected to each other. Then he went around to local ponds and streams and brought back some plants and animals. He placed them in the tanks and waited. Little by little, these different kinds of life got used to one another and formed their own ecosystem. After a few weeks, John added the sludge.
He was amazed at the results. The plants and animals in the eco-machine took the sludge as food and began to eat it! Within weeks, it had all been digested, and all that was left was pure water.
Over the years, John has taken on many big jobs. He developed a greenhouse — like facility that treated sewage (污水) from 1,600 homes in South Burlington. He also designed an eco-machine to clean canal water in Fuzhou, a city in southeast China.
“Ecological design” is the name John gives to what he does. “Life on Earth is kind of a box of spare parts for the inventor,” he says. “You put organisms in new relationships and observe what’s happening. Then you let these new systems develop their own ways to self-repair.”
1. What can we learn about John from the first two paragraphs?A.He was fond of traveling. | B.He enjoyed being alone. |
C.He had an inquiring mind. | D.He longed to be a doctor. |
A.To feed the animals. | B.To build an ecosystem. |
C.To protect the plants. | D.To test the eco-machine. |
A.To review John’s research plans. | B.To show an application of John’s idea. |
C.To compare John’s different jobs. | D.To erase doubts about John’s invention. |
A.Nature can repair itself. | B.Organisms need water to survive. |
C.Life on Earth is diverse. | D.Most tiny creatures live in groups. |
3 . As cities balloon with growth, access to nature for people living in urban areas is becoming harder to find. If you’re lucky, there might be a pocket park near where you live, but it’s unusual to find places in a city that are relatively wild.
Past research has found health and wellness benefits of nature for humans, but a new study shows that wildness in urban areas is extremely important for human well-being.
The research team focused on a large urban park. They surveyed several hundred park-goers, asking them to submit a written summary online of a meaningful interaction they had with nature in the park. The researchers then examined these submissions, coding (编码) experiences into different categories. For example, one participant’s experience of “We sat and listened to the waves at the beach for a while” was assigned the categories “sitting at beach” and “listening to waves.”
Across the 320 submissions, a pattern of categories the researchers call a “nature language” began to emerge. After the coding of all submissions, half a dozen categories were noted most often as important to visitors. These include encountering wildlife, walking along the edge of water, and following an established trail.
Naming each nature experience creates a usable language, which helps people recognize and take part in the activities that are most satisfying and meaningful to them. For example, the experience of walking along the edge of water might be satisfying for a young professional on a weekend hike in the park. Back downtown during a workday, they can enjoy a more domestic form of this interaction by walking along a fountain on their lunch break.
“We’re trying to generate a language that helps bring the human-nature interactions back into our daily lives. And for that to happen, we also need to protect nature so that we can interact with it,” said Peter Kahn, a senior author of the study.
1. What phenomenon does the author describe at the beginning of the text?A.Pocket parks are now popular. | B.Wild nature is hard to find in cities. |
C.Many cities are overpopulated. | D.People enjoy living close to nature. |
A.To compare different types of park-goers. | B.To explain why the park attracts tourists. |
C.To analyze the main features of the park. | D.To find patterns in the visitors’ summaries. |
A.Walking is the best way to gain access to nature. |
B.Young people are too busy to interact with nature. |
C.The same nature experience takes different forms. |
D.The nature language enhances work performance. |
A.Language study. | B.Environmental conservation. |
C.Public education. | D.Intercultural communication. |
4 . Turning soil, pulling weeds, and harvesting cabbage sound like tough work for middle and high school kids. And at first it is, says Abby Jaramillo, who with another teacher started Urban Sprouts, a school garden program at four low-income schools. The program aims to help students develop science skills, environmental awareness, and healthy lifestyles.
Jaramillo’s students live in neighborhoods where fresh food and green space are not easy to find and fast food restaurants outnumber grocery stores. “The kids literally come to school with bags of snacks and large bottles of soft drinks,” she says. “They come to us thinking vegetables are awful, dirt is awful, insects are awful.” Though some are initially scared of the insects and turned off by the dirt, most are eager to try something new.
Urban Sprouts’ classes, at two middle schools and two high schools, include hands-on experiments such as soil testing, flower-and-seed dissection, tastings of fresh or dried produce, and work in the garden. Several times a year, students cook the vegetables they grow, and they occasionally make salads for their entire schools.
Program evaluations show that kids eat more vegetables as a result of the classes. “We have students who say they went home and talked to their parents and now they’re eating differently,” Jaramillo says.
She adds that the program’s benefits go beyond nutrition. Some students get so interested in gardening that they bring home seeds to start their own vegetable gardens. Besides, working in the garden seems to have a calming effect on Jaramillo’s special education students, many of whom have emotional control issues. “They get outside,” she says, “and they feel successful.”
1. What do we know about Abby Jaramillo?A.She used to be a health worker. | B.She grew up in a low-income family. |
C.She owns a fast food restaurant. | D.She is an initiator of Urban Sprouts. |
A.The kids’ parents distrusted her. | B.Students had little time for her classes. |
C.Some kids disliked garden work. | D.There was no space for school gardens. |
A.Far-reaching. | B.Predictable. |
C.Short-lived. | D.Unidentifiable. |
A.Rescuing School Gardens | B.Experiencing Country Life |
C.Growing Vegetable Lovers | D.Changing Local Landscape |
5 . According to the Solar Energy Industry Association, the number of solar panels installed(安装)has grown rapidly in the past decade, and it has to grow even faster to meet climate goals. But all of that growth will take up a lot of space, and though more and more people accept the concept of solar energy, few like large solar panels to be installed near them.
Solar developers want to put up panels as quickly and cheaply as possible, so they haven’t given much thought to what they put under them. Often, they’ll end up filling the area with small stones and using chemicals to control weeds. The result is that many communities, especially in farming regions, see solar farms as destroyers of the soil.
“Solar projects need to be good neighbors,” says Jordan Macknick, the head of the Innovative Site Preparation and Impact Reductions on the Environment(InSPIRE)project. “They need to be protectors of the land and contribute to the agricultural economy.” InSPIRE is investigating practical approaches to “low-impact” solar development, which focuses on establishing and operating solar farms in a way that is kinder to the land. One of the easiest low-impact solar strategies is providing habitat for pollinators(传粉昆虫).
Habitat loss, pesticide use, and climate change have caused dramatic declines in pollinator populations over the past couple of decades, which has damaged the U.S. agricultural economy. Over 28 states have passed laws related to pollinator habitat protection and pesticide use. Conservation organizations put out pollinator-friendliness guidelines for home gardens, businesses, schools, cities—and now there are guidelines for solar farms.
Over the past few years, many solar farm developers have transformed the space under their solar panels into a shelter for various kinds of pollinators, resulting in soil improvement and carbon reduction. “These pollinator-friendly solar farms can have a valuable impact on everything that’s going on in the landscape,” says Macknick.
1. What do solar developers often ignore?A.The decline in the demand for solar energy. |
B.The negative impact of installing solar panels. |
C.The rising labor cost of building solar farms. |
D.The most recent advances in solar technology. |
A.Improve the productivity of local farms. |
B.Invent new methods for controlling weeds. |
C.Make solar projects environmentally friendly. |
D.Promote the use of solar energy in rural areas. |
A.To conserve pollinators. | B.To restrict solar development. |
C.To diversify the economy. | D.To ensure the supply of energy. |
A.Pollinators: To Leave or to Stay | B.Solar Energy: Hope for the Future |
C.InSPIRE: A Leader in Agriculture | D.Solar Farms: A New Development |
6 . Human speech contains more than 2,000 different sounds, from the common “m” and “a” to the rare clicks of some southern African languages. But why are certain sounds more common than others? A ground-breaking, five-year study shows that diet-related changes in human bite led to new speech sounds that are now found in half the world’s languages.
More than 30 years ago, the scholar Charles Hockett noted that speech sounds called labiodentals, such as “f” and “v”, were more common in the languages of societies that ate softer foods. Now a team of researchers led by Damián Blasi at the University of Zurich, Switzerland, has found how and why this trend arose.
They discovered that the upper and lower front teeth of ancient human adults were aligned (对齐), making it hard to produce labiodentals, which are formed by touching the lower lip to the upper teeth. Later, our jaws changed to an overbite structure (结构), making it easier to produce such sounds.
The team showed that this change in bite was connected with the development of agriculture in the Neolithic period. Food became easier to chew at this point. The jawbone didn’t have to do as much work and so didn’t grow to be so large.
Analyses of a language database also confirmed that there was a global change in the sound of world languages after the Neolithic age, with the use of “f” and “v” increasing remarkably during the last few thousand years. These sounds are still not found in the languages of many hunter-gatherer people today.
This research overturns the popular view that all human speech sounds were present when human beings evolved around 300,000 years ago. “The set of speech sounds we use has not necessarily remained stable since the appearance of human beings, but rather the huge variety of speech sounds that we find today is the product of a complex interplay of things like biological change and cultural evolution,” said Steven Moran, a member of the research team.
1. Which aspect of the human speech sound does Damián Blasi’s research focus on?A.Its variety. | B.Its distribution. | C.Its quantity. | D.Its development. |
A.They had fewer upper teeth than lower teeth. |
B.They could not open and close their lips easily. |
C.Their jaws were not conveniently structured. |
D.Their lower front teeth were not large enough. |
A.Supporting evidence for the research results. |
B.Potential application of the research findings. |
C.A further explanation of the research methods. |
D.A reasonable doubt about the research process. |
A.It is key to effective communication. | B.It contributes much to cultural diversity. |
C.It is a complex and dynamic system. | D.It drives the evolution of human beings. |
7 . Grading Policies for Introduction to Literature
Grading Scale90-100, A; 80-89, B; 70-79, C; 60-69, D; Below 60, E.
Essays (60%)Your four major essays will combine to form the main part of the grade for this course: Essay 1 = 10%; Essay 2 = 15%; Essay 3 = 15%; Essay 4 = 20%.
Group Assignments (30%)Students will work in groups to complete four assignments (作业) during the course. All the assignments will be submitted by the assigned date through Blackboard, our online learning and course management system.
Daily Work/In-Class Writings and Tests/Group Work/Homework (10%)Class activities will vary from day to day, but students must be ready to complete short in-class writings or tests drawn directly from assigned readings or notes from the previous class' lecture/discussion, so it is important to take careful notes during class. Additionally, from time to time I will assign group work to be completed in class or short assignments to be completed at home, both of which will be graded.
Late WorkAn essay not submitted in class on the due date will lose a letter grade for each class period it is late. If it is not turned in by the 4th day after the due date, it will earn a zero. Daily assignments not completed during class will get a zero. Short writings missed as a result of an excused absence will be accepted.
1. Where is this text probably taken from?A.A textbook. | B.An exam paper. | C.A course plan. | D.An academic article. |
A.Two. | B.Three. | C.Four. | D.Five. |
A.You will receive a zero. | B.You will lose a letter grade. |
C.You will be given a test. | D.You will have to rewrite it. |
8 . Grizzly bears, which may grow to about 2.5 m long and weigh over 400 kg, occupy a conflicted corner of the American psyche — we revere (敬畏) them even as they give us frightening dreams. Ask the tourists from around the world that flood into Yellowstone National Park what they most hope to see, and their answer is often the same: a grizzly bear.
“Grizzly bears are re-occupying large areas of their former range,” says bear biologist Chris Servheen. As grizzly bears expand their range into places where they haven’t been seen in a century or more, they’re increasingly being sighted by humans.
The western half of the US was full of grizzlies when Europeans came, with a rough number of 50,000 or more living alongside Native Americans. By the early 1970s, after centuries of cruel and continuous hunting by settlers, 600 to 800 grizzlies remained on a mere 2 percent of their former range in the Northern Rockies. In 1975, grizzlies were listed under the Endangered Species Act.
Today, there are about 2,000 or more grizzly bears in the US. Their recovery has been so successful that the US Fish and Wildlife Service has twice attempted to delist grizzlies, which would loosen legal protections and allow them to be hunted. Both efforts were overturned due to lawsuits from conservation groups. For now, grizzlies remain listed.
Obviously, if precautions (预防) aren’t taken, grizzlies can become troublesome, sometimes killing farm animals or walking through yards in search of food. If people remove food and attractants from their yards and campsites, grizzlies will typically pass by without trouble. Putting electric fencing around chicken houses and other farm animal quarters is also highly effective at getting grizzlies away. “Our hope is to have a clean, attractant-free place where bears can pass through without learning bad habits,” says James Jonkel, longtime biologist who manages bears in and around Missoula.
1. How do Americans look at grizzlies?A.They cause mixed feelings in people. |
B.They should be kept in national parks. |
C.They are of high scientific value. |
D.They are a symbol of American culture. |
A.The European settlers’ behavior. |
B.The expansion of bears’ range. |
C.The protection by law since 1975. |
D.The support of Native Americans. |
A.The opposition of conservation groups. |
B.The successful comeback of grizzlies. |
C.The voice of the biologists. |
D.The local farmers’ advocates. |
A.Food should be provided for grizzlies. |
B.People can live in harmony with grizzlies. |
C.A special path should be built for grizzlies. |
D.Technology can be introduced to protect grizzlies. |
9 . With gas prices rising and airport security lines snaking longer than ever, why not book your next domestic vacation on a train? Compared to other alternatives, it’s comfortable and relaxing. Here is some advice on how to make a trip by rail as pleasant as possible.
Plan ahead. Most long-distance trains, especially the sleeping car accommodations, sell out very quickly.
Use a travel agent. Consider turning your travel plan over to a travel agent and letting him double-check all the details, make suggestions, and then handle the actual reservations. A good one can sometimes find you discounted tickets.
Bring a blanket. When you’re riding on trains, you won’t be provided with a blanket for free, even if your trip is an overnight one.
Arrive early. Most trains operate just once a day and some run only three times a week, so missing yours can be a disaster.
Have fun.
A.Train trips aren’t for impatient types. |
B.You’ll have views from both sides of the train. |
C.The temperature on rail cars is often hard to control. |
D.That’s particularly true during busy summer months. |
E.You might have to wait longer than 24 hours to catch the next one. |
F.Chances are the cost will be a lot less than the cost of one bedroom. |
G.He may also book you in a sleeping car that’s right next to the diner. |
10 . I was about 13 when an uncle gave me a copy of Jostein Gaarder’s Sophie’s World. It was full of ideas that were new to me, so I spent the summer with my head in and out of that book. It spoke to me and brought me into a world of philosophy (哲学).
That love for philosophy lasted until I got to college. Nothing kills the love for philosophy faster than people who think they understand Foucault, Baudrillard, or Confucius better than you — and then try to explain them.
Eric Weiner’s The Socrates Express: In Search of Life Lessons from Dead Philosophers reawakened my love for philosophy. It is not an explanation, but an invitation to think and experience philosophy.
Weiner starts each chapter with a scene on a train ride between cities and then frames each philosopher’s work in the context (背景) of one thing they can help us do better. The end result is a read in which we learn to wonder like Socrates, see like Thoreau, listen like Schopenhauer, and have no regrets like Nietzsche. This, more than a book about understanding philosophy, is a book about learning to use philosophy to improve a life.
He makes philosophical thought an appealing exercise that improves the quality of our experiences, and he does so with plenty of humor. Weiner enters into conversation with some of the most important philosophers in history, and he becomes part of that crowd in the process by decoding (解读) their messages and adding his own interpretation.
The Socrates Express is a fun, sharp book that draws readers in with its apparent simplicity and gradually pulls them in deeper thoughts on desire, loneliness, and aging. The invitation is clear: Weiner wants you to pick up a coffee or tea and sit down with this book. I encourage you to take his offer. It’s worth your time, even if time is something we don’t have a lot of.
1. Who opened the door to philosophy for the author?A.Foucault. | B.Eric Weiner. |
C.Jostein Gaarder. | D.A college teacher. |
A.To compare Weiner with them. |
B.To give examples of great works. |
C.To praise their writing skills. |
D.To help readers understand Weiner’s book. |
A.Its views on history are well-presented. |
B.Its ideas can be applied to daily life. |
C.It includes comments from readers. |
D.It leaves an open ending. |
A.Objective and plain. |
B.Daring and ambitious. |
C.Serious and hard to follow. |
D.Humorous and straightforward. |