More and more people take part in marathons these days – over 30,000 people will run the London Marathon this weekend, for instance. But it’s not just the 26 miles and 385 yards that could be a daunting prospect. “I have to admit to being completely frustrated by the blocking and for 18-19 miles was just keeping away from people and being held up,” one participant grumbled after the 2012 London Marathon. “I had to overtake a lot of people and ended up with bruised（淤肿的）forearms from all the elbows,” said another.
How do such crowding problems arise, and could they be reduced? Some researchers believe that we can find the answers through a more familiar system in which jams appear – road traffic flow. Martin Treiber, of the Technical University of Dresden in Germany, has previously developed models for traffic flow. One of the first attempts to model traffic flow was made in the 1950s by James Lighthill and his collaborator Gerard Whitham of Manchester University. They considered the traffic as a kind of liquid flowing down a pipe, and looked at how the flow changes as the fluid gets denser(浓稠). At first the flow rate increases as the density increases, since you simply get more stuff through in the same period of time. But if the density becomes too high, there’s a risk of jams, and the flow rate drops sharply.
Treiber’s model of a marathon uses this same principle that the flow rate first increases and then decreases as the density of runners increases, thanks to an sudden switch from free to crowded flow. He assumes that there is a range of different preferred speeds for different runners, which each maintains throughout the race. With just these factors, Treiber can calculate the flow rate of runners, knowing the “carrying capacity”(承载能力)at each point on the route.
This allows Treiber to figure out how blocking might depend on the race conditions – for example, for different starting procedures. Some marathons start by letting all the runners set off at once (which means those at the back have to wait until those in front have moved forward). Others assign runners to various groups according to ability, and let them start in a series of waves.
Treiber has applied the model to the annual Rennsteig half-marathon in central Germany, which attracts around 6,000 participants. The traditional route had to be changed in 2013, because the police were no longer willing to close a road to ensure that runners could cross safely. It could pass either over a 60m wooden bridge or through a tunnel. Treiber used his model to predict the likely blocking caused in the various options. The model predicted that a mass start would risk an overload of runners if the bridge were to be used. Only by moving the starting point further back from the bridge could the danger be avoided – and even then, if some of the numbers assumed in the model were only slightly inaccurate, there was still a risk of jams at the bridge. On the other hand, no dangerous blocking seemed likely for the tunnel route. The run organizers consulted Treiber’s team, and eventually chose this option.What is the worst thing while running a marathon?
| A．The long distance. |
| B．Too many participants. |
| C．The dangerous blocking. |
| D．Serious injuries in forearms. |
Which of the following statements is true?
| A．James Lighthill is the first expert trying to model traffic flow. |
| B．The denser the flow is, the faster the flow rate becomes. |
| C．The flow rate increases in the beginning because fewer people passed together. |
| D．The flow rate increases first and then decreases later when the flow is too denser. |
What is NOT true about the Rennsteig?
| A．It has much less participants than the London Marathon in 2014. |
| B．It has a shorter distance than the London Marathon. |
| C．The route was changed because the traditional one is not safe any longer. |
| D．The participants running this marathon will pass a tunnel because this choice is safer. |
What’s the main idea of the passage?
| A．Make a comparison between marathon and road traffic. |
| B．Running a marathon is somewhat dangerous if it is not well organized. |
| C．Introduce a new technology to solve the blocking problem in marathon. |
| D．Some advice for people who are to run a marathon. |
Last night, on my way home I stopped because of being attracted by some hamburgers at a fast food restaurant. On my way in, a homeless man approached me and asked, “Do you have any bottles lying around?” I knew he would recycle them for a few cents, but I didn’t have any, so I said no. And again he asked, “Can you spare some change ?” I smiled, and said no again. He was very respectful; he smiled back and said, “OK, thank you.” Even though he didn’t have anything, he was still in good spirits. From the way he spoke I could tell he was smart.
Then I bought one hamburger and enjoyed my meal, but in the back of my mind I wondered whether the homeless man was hungry. After I finished my meal I decided to order another one for him. At this point I didn’t know if he was still around, but I tried anyway.
At the counter I ordered a hamburger and also a hot chocolate, because it was cold outside, and I thought it would help warm him up. They delivered me the hot chocolate first and as I waited for my hamburger, I noticed the homeless man was standing right beside me. I looked at him and smiled, “This hot chocolate is for you.” He replied like a gentleman, “Thank you so much. That’s very kind of you.”
I always believe no matter how hard up I am, there are always those who are worse off than I. When you help someone, it’s not always about money, it’s about love. The love you give today, someone might forget tomorrow. It doesn’t matter. Love anyway, because the greatest thing you can give is love.What does the underlined phrase mean according to the passage?
| A．Rich in money. | B．Short in money. |
| C．Generous. | D．Selfish. |
We can learn from the first two paragraphs that the author _____.
| A．was angry with the homeless man |
| B．was an old friend of the homeless man |
| C．decided to help the homeless man after his meal |
| D．finished his meal quickly to help the homeless man |
We can infer from the text that the homeless man was _____.
| A．old and sick | B．polite and friendly |
| C．sad and nervous | D．calm and confident |
The author wants to tell us that _____.
| A．love cannot be forced |
| B．money cannot buy everything |
| C．there is always someone that we can help |
| D．we shouldn’t forget those who once helped us |
Raeann Sleith began making bracelets (手链) when she was six. Family and friends loved her designs and asked for more. When admirers suggested that Raeann sell her bracelets, she realized she wanted to do just that — and donate the money to help kids with special needs, like her brother Derek.
Raeann’s older brother, Derek, has cri du chat syndrome. Children with cri du chat usually have problems understanding ideas and might have a hard time learning to talk. Many also have weak muscles that can cause problems with walking or using their fingers to pick things up. The term cri du chat means “cry of the cat” in French. Babies with cri du chat often have a high-pitched cry that sounds like that of a little cat.
Over the years, Derek’s teachers helped him learn sign language and gestures. They also taught him skills such as recognizing letters, cutting with scissors, and understanding basic math. Raeann wanted to donate money to Derek’s school. “I just wanted to help my brother,” she says, “and the people who help him.”
At first, Raeann focused on creating jewelry that would raise awareness for cri du chat. But people started requesting bracelets to wear as a symbol of support and awareness for a variety of other diseases and disorders. To create those symbols, Raeann researched the color most often associated with raising awareness for the disease or disorder, such as pink for breast cancer or orange for leukemia.
In the end, it turned out to be a great idea. In only a few years, Raeann has donated more than $30,000 to local charities. Raeann’s mom says that working on the bracelets has developed the generosity and kindness that already existed in her daughter. Raeann plans to keep making bracelets and raising dollars for charities. “I just want to keep going on with it,” she says, “to help my brother more.”Paragraph 2 is mainly about _____.
| A．the origin of the term cri du chat |
| B．the research on cri du chat syndrome |
| C．the treatment for cri du chat syndrome |
| D．the characteristics of cri du chat syndrome |
The bracelets Raeann Sleith has made _____.
| A．are decorated with colorful jewels |
| B．represent different kinds of diseases |
| C．are very popular all over the world |
| D．add up to more than 30,000 |
Which of the following can best describe Raeann Sleith?
| A．Caring and generous. |
| B．Honest and responsible. |
| C．Polite and determined. |
| D．Creative and humorous. |
The main purpose of the text is to _____.
| A．tell us the story of a loving girl |
| B．show us how to make bracelets |
| C．introduce a kind of rare disease |
| D．ask us to donate to local charities |
It is widely known that any English conversation begins with The Weather. Such a fixation with the weather finds expression in Dr.Johnson’s famous comment that “When two English meet, their first talk is of weather.” Though Johnson’s observation is as accurate now as it was over two hundred years ago, most commentators fail to come up with a convincing explanation for this English weather-speak.
Bill Bryson, for example, concludes that, as the English weather is not at all exciting, the obsession with it can hardly be understood. He argues that “To an outsider, the most striking thing about the English weather is that there is not very much of it.” Simply, the reason is that the unusual and unpredictable weather is almost unknown in the British Isles.
Jeremy Paxman, however, disagrees with Bryson, arguing that the English weather is by nature attractive. Bryson is wrong, he says, because the English preference for the weather has nothing to do with the natural phenomena.” The interest is less in the phenomena themselves, but in uncertainty.” According to him, the weather in England is very changeable and uncertain and it attracts the English as well as the outsider.
Bryson and Paxman stand for common misconceptions about the weather-speak among the English. Both commentators, somehow, are missing the point. The English weather conversation is not really about the weather at all. English weather-speak is a system of signs, which is developed to help the speakers overcome the natural reserve and actually talk to each other. Everyone knows conversations starting with weather-speak are not requests for weather data. Rather, they are routine greetings, conversation starters or the blank “fillers”, In other words, English weather-speak is a means of social bonding.The author mentions Dr.Johnson’s comment to show that________.
| A．most commentators agree with Dr.Johnson |
| B．Dr.Johnson is famous for his weather observation |
| C．the comment was accurate two hundred years ago |
| D．English conversations usually start with the weather |
What does the underlined word “obsession” most probably refer to?
| A．An emotional state |
| B．An unknown phenomenon. |
| C．A historical concept. |
| D．A social trend. |
According to the passage, Jeremy Paxman believes that________.
| A．Bill Bryson has little knowledge of the weather |
| B．English people talk about the weather for its uncertainty |
| C．the English weather attracts people to the British Isles |
| D．there is nothing special about the English weather |
What is the author’s main purpose of writing the passage?
| A．To convince people that the English weather is changeable. |
| B．To analyze misconceptions about the English weather. |
| C．To find fault with both Bill Bryson and Jeremy Paxman. |
| D．To explain what English weather-speak is about. |
Soup on my nose, a nearly spilled glass of wine and chocolate down my white blouse, as blind dates suggest, this was a really messy one. I have never made so much noise with plates and glasses, nor had I dined with a never-before-met companion. This blind date was quite different: we could see nothing. "Put your left hand on my shoulder, and then we'll take small steps forward," said Michael, the visually impaired(视力障碍的) server, in an East London accent. We three felt our way carefully bumping past heavy curtains before being arranged at the dining table, where we would eat and drink three completely secret and unseen courses.
Welcome to Alchemy in the Dark, Hong Kong's first full-time restaurant in total darkness. Upon arrival, diners briefly tell the chef on their allergies(过敏性反应), lock away their mobile phones and enter the windowless restaurant, which can seat 25. When the meal is over, the contents of the delicious menu are shown --- often to the diners' surprise. "This is definitely duck," my friend said, while eating chicken. "This soup," I declared, "is carrot and coriander." Even the too-close smell did not reveal the real tomato and cumin flavors. Dining in the dark changes everything: the sense of smell is heightened, manners go out of the window ----using your hands to feel around the plate becomes normal--- and there is a strange thrill in being able to ignore your facial expressions. Best of all? You don't have to spend hours beforehand(事先) wondering what to wear.
Alchemy in the Dark is at 16 Arbuthnot Road, Central, (tel: 6821 2801) and is open Monday to Saturday, from 7pm to 11pm. Reservations are required. A three-course meal with wine pairing costs HK$700 per person. Five per cent of all profits go to the Hong Kong Society for the Blind.
How did the author and her companion arrive at their dining table?
| A．By using a map |
| B．By being led |
| C．By feeling their way. |
| D．By finding it by themselves |
According to passage, which of the following is true?
| A．The diners might eat what they are allergic to. |
| B．The author enjoyed a special lunch at Alchemy in the Dark. |
| C．The restaurant donated some money to the H. K Society for the Blind. |
| D．The diners aren’t allowed to take phones to the restaurant at any time. |
From the passage we can learn that the author ___________.
| A．had the table booked |
| B．shared the meal with a friend. |
| C．practiced how to eat in total darkness. |
| D．chose her clothes in advance for the meal. |
The last paragraph is intended to ____________.
| A．present some facts about eating in the dark. |
| B．inform what to do at Alchemy in the Dark |
| C．conclude the experience of eating at Alchemy in the Dark. |
| D．provide some information about Alchemy in the Dark. |
Grant Wood’s American Gothic caused a stir（轰动）in 1930 when it was exhibited for the first time at the Art Institute of Chicago and awarded a prize of 300 dollars. Newspapers across the country carried the story, and the painting of a farmer and a younger woman posed before a white house brought the artist instant fame.
In 1930, Grant Wood, an American painter with European training, noticed a small white house built in the small southern Iowa town of Eldon. Wood was so fascinated by it that he decided to paint the house along with the kind of people he thought should live in that house. In the painting, the farmer is modeled on his dentist. Dr. Byron McKeeby. His younger sister Nan served as a model for the woman （imagined to be the farmer’s wife or daughter）. Wood wanted to give a description of the traditional roles of men and women as the man is holding a pitchfork symbolizing hard labor. Each element was painted separately; the models sat separately and never stood in front of the house. The Gothic style of the house inspired the painting’s title.
American Gothic remains one of the most famous paintings in the history of American art. The painting has become part of American popular culture. Some believe that Wood used it to satirize（讽刺） the narrow-mindedness that has been said to characterize Midwestern culture. The painting may also be read as a praise of the moral virtue or rural America or even as a mixture of praise and satire. American Gothic is one of the few images to reach the status of cultural symbol, along with Leonardo da Vinci’s Mona Lisa.Which of the following is true about American Gothic?
| A．It won a prize of 300 pounds. |
| B．The two characters in it posed before the White House. |
| C．It was the first painting by Grant Wood. |
| D．It was on show at the Art Institute of Chicago in 1930. |
From the passage we can infer Iowa is in __________.
| A．the southern town of Eldon |
| B．the Midwest of the United States |
| C．a European country |
| D．the city of Chicago |
Grant Wood chose the two models __________.
| A．to describe traditional roles of men and women |
| B．to praise the moral virtue of rural America |
| C．to make his dentist and his sister famous |
| D．to carry the story across the country |
The title of the painting is based on __________.
| A．the name of a small town |
| B．the man and the woman |
| C．the style of the house |
| D．the pitchfork symbolizing hard labor |
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