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 . Bike Rental & Guided Tours
Welcome to Amsterdam, welcome to MacBike. You see much more from the seat of a bike! Cycling is the most economical, sustainable and fun way to explore the city, with its beautiful canals, parks, squares and countless lights. You can also bike along lovely landscapes outside of Amsterdam.
Why MacBike
MacBike has been around for almost 30 years and is the biggest bicycle rental company in Amsterdam. With over 2,500 bikes stored in our five rental shops at strategic locations, we make sure there is always a bike available for you. We offer the newest bicycles in a wide variety, including basic bikes with foot brake (刹车), bikes with hand brake and gears (排挡), bikes with child seats, and children’s bikes.
Prices
Hand Brake, Three Gears | Foot Brake, No Gears | |
1 hour | €7.50 | €5.00 |
3 hours | €11.00 | €7.50 |
1 day (24 hours) | €14.75 | €9.75 |
Each additional day | €8.00 | €6.00 |
Guided City Tours
The 2.5-hour tour covers the Gooyer Windmill, the Skinny Bridge, the Rijksmuseum, Heineken Brewery and much more. The tour departs from Dam Square every hour on the hour, starting at 1:00 pm every day. You can buy your ticket in a MacBike shop or book online.
1. What is an advantage of MacBike?A.It gives children a discount. | B.It offers many types of bikes. |
C.It organizes free cycle tours. | D.It has over 2,500 rental shops. |
A.€15.75. | B.€19.50. | C.€22.75. | D.€29.50. |
A.The Gooyer, Windmill. | B.The Skinny Bridge. |
C.Heineken Brewery. | D.Dam Square. |
3 . Yellowstone National Park offers a variety of ranger programs throughout the park, and throughout the year. The following are descriptions of the ranger programs this summer.
Experiencing Wildlife in Yellowstone (May 26 to September 2)
Whether you’re hiking a backcountry trail (小径), camping, or just enjoying the park’s amazing wildlife from the road, this quick workshop is for you and your family. Learn where to look for animals and how to safely enjoy your wildlife watching experience. Meet at the Canyon Village Store.
Junior Ranger Wildlife Olympics (June 5 to August 21)
Kids can test their skills and compare their abilities to the animals of Yellowstone. Stay for as little or as long as your plans allow. Meet in front of the Visitor Education Center.
Canyon Talks at Artist Point (June 9 to September 2)
From a classic viewpoint, enjoy Lower Falls, the Yellowstone River, and the breathtaking colors of the canyon (峡谷) while learning about the area’s natural and human history. Discover why artists and photographers continue to be drawn to this special place. Meet on the lower platform at Artist Point on the South Rim Drive for this short talk.
Photography Workshops (June 19 & July 10)
Enhance your photography skills — join Yellowstone’s park photographer for a hands-on program to inspire new and creative ways of enjoying the beauty and wonder of Yellowstone.
6/19 — Waterfalls &Wide Angles: meet at Artist Point.
7/10 — Wildflowers &White Balance: meet at Washburn Trailhead in Chittenden parking area.
1. Which of the four programs begins the earliest?A.Photography Workshops. | B.Junior Ranger Wildlife Olympics. |
C.Canyon Talks at Artist Point. | D.Experiencing Wildlife in Yellowstone. |
A.Works of famous artists. | B.Protection of wild animals. |
C.Basic photography skills. | D.History of the canyon area. |
A.Artist Point. | B.Washburn Trailhead. |
C.Canyon Village Store. | D.Visitor Education Center. |
4 . 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 |
5 . The elderly residents (居民) in care homes in London are being given hens to look after to stop them feeling lonely.
The project was dreamed up by a local charity (慈善组织) to reduce loneliness and improve elderly people’s wellbeing. It is also being used to help patients suffering dementia, a serious illness of the mind. Staff in care homes have reported a reduction in the use of medicine where hens are in use.
Among those taking part in the project is 80-year-old Ruth Xavier. She said: “I used to keep hens when I was younger and had to prepare their breakfast each morning before I went to school. ”
“I like the project a lot. I am down there in my wheelchair in the morning letting the hens out and down there again at night to see they’ve gone to bed.”
“It’s good to have a different focus. People have been bringing their children in to see the hens and residents come and sit outside to watch them. I’m enjoying the creative activities, and it feels great to have done something useful.”
There are now 700 elderly people looking after hens in 20 care homes in the North East, and the charity has been given financial support to roll it out countrywide.
Wendy Wilson, extra care manager at 60 Penfold Street, one of the first to embark on the project, said: “Residents really welcome the idea of the project and the creative sessions. We are looking forward to the benefits and fun the project can bring to people here.”
Lynn Lewis, director of Notting Hill Pathways, said: “We are happy to be taking part in the project. It will really help connect our residents through a shared interest and creative activities.”
1. What is the purpose of the project?A.To ensure harmony in care homes. | B.To provide part-time jobs for the aged. |
C.To raise money for medical research. | D.To promote the elderly people’s welfare. |
A.She has learned new life skills. | B.She has gained a sense of achievement. |
C.She has recovered her memory. | D.She has developed a strong personality. |
A.Improve. | B.Oppose. | C.Begin. | D.Evaluate. |
A.It is well received. | B.It needs to be more creative. |
C.It is highly profitable. | D.It takes ages to see the results. |
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 . If you want to tell the history of the whole world, a history that does not privilege one part of humanity, you cannot do it through texts alone, because only some of the world has ever had texts, while most of the world, for most of the time, has not. Writing is one of humanity’s later achievements, and until fairly recently even many literate (有文字的) societies recorded their concerns not only in writing but in things.
Ideally a history would bring together texts and objects, and some chapters of this book are able to do just that, but in many cases we simply can’t. The clearest example of this between literate and non-literate history is perhaps the first conflict, at Botany Bay, between Captain Cook’s voyage and the Australian Aboriginals. From the English side, we have scientific reports and the captain’s record of that terrible day. From the Australian side, we have only a wooden shield (盾) dropped by a man in flight after his first experience of gunshot. If we want to reconstruct what was actually going on that day, the shield must be questioned and interpreted as deeply and strictly as the written reports.
In addition to the problem of miscomprehension from both sides, there are victories accidentally or deliberately twisted, especially when only the victors know how to write. Those who are on the losing side often have only their things to tell their stories. The Caribbean Taino, the Australian Aboriginals, the African people of Benin and the Incas, all of whom appear in this book, can speak to us now of their past achievements most powerfully through the objects they made: a history told through things gives them back a voice. When we consider contact (联系) between literate and non-literate societies such as these, all our first-hand accounts are necessarily twisted, only one half of a dialogue. If we are to find the other half of that conversation, we have to read not just the texts, but the objects.
1. What is the first paragraph mainly about?A.How past events should be presented. | B.What humanity is concerned about. |
C.Whether facts speak louder than words. | D.Why written language is reliable. |
A.His report was scientific. | B.He represented the local people. |
C.He ruled over Botany Bay. | D.His record was one-sided. |
A.Problem. | B.History. | C.Voice. | D.Society. |
A. How Maps Tell Stories of the World | B. A Short History of Australia |
C. A History of the World in 100 Objects | D. How Art Works Tell Stories |
8 . 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. |
9 . Henry Raeburn (1756-1823)
The ExhibitionThis exhibition of some sixty masterpieces celebrating the life and work of Scotland’s best loved painter, Sir Henry Raeburn, comes to London. Selected from collections throughout the world, it is the first major exhibition of his work to be held in over forty years.
Lecture SeriesScottish National Portrait (肖像画) Gallery presents a series of lectures for the general public. They are held in the Lecture Room. Admission to lectures is free.
An Introduction to Raeburn Sunday 26 Oct., 15:00 DUNCAN THOMSON | Raeburn’s English Contemporaries Thursday 30 Oct., 13:10 JUDY EGERTON |
Characters and Characterisation in Raeburn’s Portraits Thursday 6 Nov., 13:10 NICHOLAS PHILLIPSON | Raeburn and Artist’s Training in the 18th Century Thursday 13 Nov., 13:10 MARTIN POSTLE |
Monday-Saturday 10.00-17.45 Sunday 12.00-17.45
Last admission to the exhibition: 17.15. There is no re-admission.
Closed: 24-26 December and 1 January.
Admission£4. Children under 12 years accompanied by an adult are admitted free.
Schools and CollegesA special low entrance charge of £2 per person is available to all in full-time education, up to and including those at first degree level, in organised groups with teachers.
1. What is the right time for attending Raeburn’s English Contemporaries?A.Sun. 26 Oct. | B.Thurs. 30 Oct. | C.Thurs. 6 Nov. | D.Thurs.13 Nov. |
A.£4. | B.£8. | C.£12. | D.£16. |
A.They should go on Sunday mornings. | B.They should come from art schools. |
C.They must be led by teachers. | D.They must have ID cards with them. |
10 . My life as a tax-paying employed person began in middle school, when, for three whole days, I worked in a baking factory.
My best friend Betsy’s father was a manager at Hough Bakeries, which, at Easter time,
Our
Dad
A.sold | B.ordered | C.made | D.reserved |
A.stores | B.families | C.schools | D.citizens |
A.generous | B.financial | C.technical | D.temporary |
A.plans | B.problems | C.excuses | D.hobbies |
A.offer | B.earn | C.set | D.suggest |
A.worked | B.closed | C.developed | D.survived |
A.ambition | B.permission | C.experience | D.invitation |
A.joys | B.ideas | C.roles | D.choices |
A.Save | B.Keep | C.Stop | D.Remove |
A.harder | B.better | C.longer | D.cheaper |
A.Calm down | B.Slow down | C.Stay on | D.Move on |
A.indicated | B.witnessed | C.expected | D.remembered |
A.cried | B.smiled | C.hesitated | D.refused |
A.tasting | B.finding | C.sharing | D.delivering |
A.withdraw | B.donate | C.receive | D.appreciate |