We might like to think we're not influenced by other people, but a new study into the group-buying mechanisms（機(jī)制） - like those used on coupon（優(yōu)惠券） sites such as Groupon and LivingSocial - reveals that telling buyers who come later to the offer how many have already signed up increases the number of purchasers.
Researchers at the University of Toronto's Rotman School of Management wanted to understand why group buying sites that have entered the market recently have enjoyed greater success than those operating a decade ago, such as Mercata and MobShop.
Earlier attempts typically left potential buyers waiting for days before confirming whether or not they had got the offer they had signed up for.
“We think one of the reasons group-buying has been successful recently is because of the short time horizon,” says Rotman Professor Ming Hu, who co-wrote the study with Professor Mengze Shi and PhD student Jiahua Wu. “It allows for a herding effect.”
Another reason is the use of an information structure that discloses to later arrivals how many have already signed onto the deal.
Researchers looked at two ways of designing the purchasing mechanism for a group buy:a simultaneous mechanism, where no one knows how many buyers have come before them, and asequential（連續(xù)的） mechanism, where a second group of buyers has the advantage of knowing the size of the first group.
The researchers' analytical（分析的） model shows the most successful mechanism is the sequential one because it eliminates uncertainty for those coming later to the deal, and improves the confidence of those who sign on early, as they're able to track the numbers of those who come after them.
“That boosts confidence,” says Professor Hu, who teaches operations management. Deals for "luxury" services, versus everyday items, work better in a group buy scenario（方案） because they offer consumers a greater benefit.
小題1:It can be learned from the text that ______.
A．the short time horizon is the reason why group-buying has been successful.
B．a(chǎn) simultaneous mechanism is where a group of buyers has the advantage of knowing how many people have signed up.
C．a(chǎn) sequential mechanism allows a herding effect which boosts the confidence of the buyers.
D．researchers at the University of Toronto's Rotman School of Management carried out an experiment about why group buying sites entered the market successfully, such as Mercata and MobShop.
小題2:The underlined word “eliminates” in paragraph 7 probably means“______”.
A．to become or to make something greater in amount, number, value
B．to remove or get rid of something
C．to deliberately not include something in what you are doing or considering
D．to make something known to somebody
小題3:What can be the best title for the passage?
A．Secret for marketing success – boosting confidence.
B．Secret for group-buying mechanism—herding effect.
C．Comparison between a simultaneous mechanism and a sequential mechanism.
D．What others do influences our decisions.

小題1:C
小題2:B
小題3:B
本文講述了“羊群效應(yīng)”促進(jìn)團(tuán)購(gòu)的原因。
小題1:推理判斷題。根據(jù)文章的第四段It allows for a herding effect.以及文章第七、八段，可知，最大的成功機(jī)制是連續(xù)的機(jī)制因?yàn)樗撕竺孢M(jìn)行交易的顧客的不確定性，增強(qiáng)了顧客的自信。
小題2:猜測(cè)詞義題。根據(jù)下文的boosts confidence可知是“消除”不確定性，故選B.
小題3:概括標(biāo)題。本文分析了團(tuán)購(gòu)機(jī)制—羊群效應(yīng)成功的秘密。故選B.
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源：不詳 題型：完形填空

There at a secondhand clothing store in Northampton Mass, my l4-year-old son, John, and I noticed the coat. While the other coats drooped (低垂), this one looked as if it were   41  itself up. The coat was beautifully made, with a Fifth Avenue label and an  42   price of $28, which was popular just then with   43  , but could cost several hundred dollars new. John tried it on and the  44   was perfect.
John  45   the coat to school the next day and came home with a big smile. “Did the kids like your coat?” I asked. “They loved it,” he said,   46   folding it over the back of a chair and smoothing it flat. Over the next few weeks, a   47  came over John. Agreement replaced contrariness (作對(duì)) and   48   discussion replaced fierce argument. He became more mannerly and  49  , eager to please. He would generously lend his younger brother his tapes and lecture him   50   his behavior. When I mentioned this   51  to his teacher and wondered what caused the changes, she said laughing. “It   52   be his coat!” Another teacher told him she was giving him a good mark not only because he had earned   53   but because she liked his coat. At the library, we ran   54  a friend. “Could this be John?” he asked surprisingly,   55  John’s new height, appreciating the cut of his coat and holding out his hand, one gentleman to another.
John and I both know we should never   56   a person’s clothes for the real person within them.   57  , there is something to be said for wearing a standard of excellence for the world to see and for   58  what is on the inside with what is on the outside.
For John, it is a time when it is as easy to try on different  59  to life as it is to try on a coat. The whole world, the whole future is stretched out ahead, a vast landscape   60  all the doors are open. And he could picture himself walking through those doors wearing his wonderful, magical coat.
小題1:
A．turningB．holdingC．showingD．hanging
小題2:
A．unreasonableB．unbearableC．unbelievableD．unfair
小題3:
A．teenagersB．a(chǎn)dultsC．womenD．men
小題4:
A．colorB．priceC．styleD．fit
小題5:
A．sentB．carriedC．broughtD．wore
小題6:
A．casuallyB．comfortablyC．carefullyD．quickly
小題7:
A．happinessB．changeC．smileD．matter
小題8:
A．reasonedB．heatedC．wildD．strong
小題9:
A．considerateB．handsomeC．hopefulD．curious
小題10:
A．of B．onC．inD．a(chǎn)t
小題11:
A．incidentB．a(chǎn)ccidentC．a(chǎn)ffair D．event
小題12:
A．canB．mustC．willD．should
小題13:
A．thisB．themC．itD．one
小題14:
A．downB．withC．intoD．a(chǎn)fter
小題15:
A．looking up at B．looking down on
C．putting up withD．coming up with
小題16:
A．changeB．mistakeC．tradeD．turn
小題17:
A．HoweverB．MoreoverC．ThereforeD．Besides
小題18:
A．a(chǎn)ttachingB．joiningC．relatingD．matching
小題19:
A．meanB．methodsC．a(chǎn)pproachesD．measures
小題20:
A．whereB．whyC．howD．when

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

A federal agency on Tuesday called for a ban on all cellphone use by drivers -- the most far-reaching recommendation up to now — saying its decision was based on a decade of investigations into distraction-related(與分散注意力有關(guān)的) accidents, as well as growing concerns that powerful mobile devices are giving drivers even more reasons to look away from the road.
As part of its recommendation, the National Transportation Safety Board is urging states to ban drivers from using hands-free devices, including wireless headsets. No state now has made laws to ban such activity, but the Board said that drivers faced serious risks from talking on wireless headsets, just as they do by taking a hand off the wheel to hold a phone to their ears.
However, the concern was heightened by increasingly powerful phones that people can use to send e-mails, watch movies and play games.
"Every year, new devices are being on sale." she said. "People are attracted to update their Facebook page, to play music with cellphone, as if sitting at a desk. But they are driving a car."
The agency based its recommendation on evidence from its investigation of numerous crashes in which electronic distraction was a major contributing factor.
Ms. Hersman said she understood that this recommendation would be unwelcome in some circles, given the number of drivers who talk and text. But she compared distracted driving to drunken driving and even smoking, which required wholesale cultural shifts to change behavior.
"It's going to be very unpopular with some people." she said. "We're not here to win a popularity contest. We're here to do the right thing. This is a difficult recommendation, but it's the right recommendation and it is time."
The agency's recommendation is not required for states to adopt such a ban. And it won't likely be agreed upon by state lawmakers who are unwillingly to anger those who have grown accustomed to using their device behind the wheel.
The ban also deserves attention because it is the first call by a federal agency to end the practice completely, rather than the partial ban that some lawmakers have put in place by allowing hands-free talking.
小題1:The ban on all cellphone use by drivers was put forward______.
A．a(chǎn)fter a long discussion and recommendation
B．a(chǎn)fter about ten years' investigation in it
C．because of the most powerful mobile devices
D．for the reason of heading away from the road
小題2:From the second paragraph we know that now______.
A．it is legal to use wireless headsets while driving
B．wireless headsets are illegal in some states
C．it is safe to talk on wireless headsets while driving
D．hands-free devices can be used in some states
小題3:We can know from the passage that______.
A．electronic distraction resulted in numerous crashes
B．numerous crashes were caused by drunk driving
C．electronic distraction contributed much to the ban
D．the recommendation was based on electronic distraction
小題4:Ms Hersman thinks that distracted driving, drunken driving and smoking______.
A．a(chǎn)re just common behaviorsB．can be shifted to behaviors
C．a(chǎn)re behaviors to be changedD．a(chǎn)re just cultural behaviors
小題5:Which of the following is the best title of the passage?
A．Cellphone Ban inCarsB．Valuable Ban for Cellphones
C．Drivers Ban CellphonesD．Cellphone Ban while Driving

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：完形填空

The Catherine family enjoyed the good things in life as much as anyone else. They ___36___games, books, music, toys, good food and good times. But sometimes ___37___seemed, especially to Mrs. Catherine who ___38___the house, that they had too much stuff in the closets, in the drawers, in the basement, and almost ___39___. It made Mrs. Catherine a little ___40___.
One day, at breakfast, Mrs. Catherine made a（n） ___41___. “This family,”she said firmly, “has too much stuff. It's time to get ___42___of some of them. ”The three children all ___43___with this idea and helped pile used things and unused things they were never going to use into the car.
Their first ___44___was Home for the Aged where the older went to live. Nurses and doctors looked after them, but sometimes the older got a little lonely and ___45___. They liked visitors and things to do. When the family arrived at Home for the Aged, they ___46___out their games and puzzles to the older and then sat down to play games and do puzzles with them. They had a ___47___time and they were sorry when it was time to leave.
Their next stop was the Young Cubs Hospital. The Catherine family dropped ___48___their load of used toys which were very welcome. The hospital workers said the toys would be given out at the hospital ___49___party.
Their last stop was People Who Care store. This was a store that sold things to ___50___money for those who needed warm clothes and good food. The Catherine family lugged all their old clothes and furniture into the store.  
After that, the Catherine family ___51___home with warm feelings about what they had done. ___52___they drove along, they passed the lighted ___53___of supermarkets which were beautifully decorated for Christmas. There was window after window of the very latest things, but they were so filled with special thoughts about helping others that they ___54___noticed the wonderful things in the windows except maybe out of the ___55___of their eyes.
小題1:
A．readB．playedC．enjoyed D．shared
小題2:
A．thereB．theyC．it D．this
小題3:
A．knewB．boughtC．sold D．managed
小題4:
A．a(chǎn)nywhereB．everywhereC．nowhere D．somewhere
小題5:
A．uneasyB．difficultC．ready D．happy
小題6:
A．a(chǎn)nnouncementB．a(chǎn)musementC．notice D．report
小題7:
A．a(chǎn)wayB．outC．hold D．rid
小題8:
A．decidedB．a(chǎn)greedC．a(chǎn)rgued D．dealt
小題9:
A．placeB．a(chǎn)rrivalC．stop D．departure
小題10:
A．boredB．disappointedC．excited D．determined
小題11:
A．handedB．carriedC．found D．let
小題12:
A．fineB．badC．sad D．sorry
小題13:
A．ontoB．intoC．out D．off
小題14:
A．ThanksgivingB．HalloweenC．Christmas D．Eastern
小題15:
A．riseB．a(chǎn)riseC．raise D．a(chǎn)rouse
小題16:
A．headedB．a(chǎn)rrivedC．left D．felt
小題17:
A．ThoughB．AsC．Since D．Before
小題18:
A．closetsB．housesC．doors D．windows
小題19:
A．nearlyB．hardlyC．closely D．immediately
小題20:
A．cornersB．sidesC．edges D．covers

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Children, especially at young ages, are very creative. And creativity can be a glorious thing. Look at all the amazing artists and architects that have created glorious pieces of history. Look at all the authors with the award winning books. Now I am not saying everyone is going to end up this way but creativity is an important part of growing up and becoming who you are. This should be encouraged in young children as well as the older children.
Young children grow up playing with make-believe. And so many people try to make their young child see that their invisible friend isn’t real or that talking when someone is not in the room is weird. To adults it is, but for small children it is them being creative. May it be them playing house, or chef, or playing with stuffed animals, it is their creative part coming out. Some kids can have fun playing with rocks and sticks and it’s because of their creativeness that they can do this. The invisible friend part is another part of being imaginative, and is not a bad thing since they will grow out of that phase. So encourage this and play along with them, play house or stuffed animals or whatever they want to play. Help keep their imagination running. You can even make up games, like treasure hunts, dinosaurs, or super heroes; there is just so much you can choose from.
For older children, talk to them. Help them see things through others’ eyes, or help them see things from a different point of view. Helping children see things from other views helps them keep their minds open for new ideas and new things.
All this can help your children’s minds stay creative. The arts and music, even thoughts are an important part of life and important in our society. If we didn’t have and encourage creative thinking, we wouldn't have had inventors, or philosophers, or as I said before, artists.
小題1:The underlined word “weird” is the closest in meaning to “_______”.
A．similar B．strange C．commonD．natural
小題2:If a child plays with his invisible friend, it shows that _______.
A．the child is longing for friendship
B．the child has no one to play with in life
C．the child has great imagination
D．there is something wrong with the child’s mind
小題3:According to the author, if a child talks alone in a room, we should _______.
A．let him be
B．stop him from doing so
C．give him some advice
D．know that he is suffering from loneliness
小題4:What is mainly talked about in the passage?
A．How creative artists and architects can be.
B．How to help children grow up in a healthy way.
C．What kind of activities children like.
D．How to protect and encourage children’s creativity.

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

How to Be a Winner
Sir Steven Redgrave
Winner of 5 Olympic Gold Medals
“In 1997 I was found to have developed diabetes（糖尿�。�. Believing my career was over, I felt extremely low. Then one of the specialists said there was no reason why I should stop training and competing. That was it — the encouragement I needed. I could still be a winner if I believed in myself. I am not saying that it isn’t difficult sometimes. But I wanted to prove to myself that I wasn't finished yet. Nothing is to stand in my way.”
Karen Pickering
Swimming World Champion
“I swim 4 hours a day, 6 days a week. I manage that sort of workload by putting it on top of my diary. This is the key to success — you can’t follow a career in any field without being well-organized. List what you believe you can achieve. Trust yourself, write down your goals for the day, however small they are, and you’ll be a step closer to achieving them.”
Kirsten Best
Poet & Writer
“When things are getting hard, a voice inside my head tells me that I can’t achieve something. Then, there are other distractions, such as family or hobbies. The key is to concentrate. When I feel tense, it helps a lot to repeat words such as ‘calm’, ‘peace’ or ‘focus’, either out loud or silently in my mind. It makes me feel more in control and increases my confidence. This is a habit that can become second nature quite easily and is a powerful psychological tool．”
小題1:What does Sir Steven Redgrave mainly talk about?
A．Difficulties influenced his career．
B．Specialists offered him medical advice．
C．Training helped him defeat his disease．
D．He overcame the shadow of illness to win．
小題2:What does Karen Pickering put on top of her diary?
A．Her sports career．
B．Her achievements．
C．Her daily happenings．
D．Her training schedule．
小題3:What does the underlined word “distractions” probably refer to？
A．Ways that help one to focus．
B．Words that help one to feel less tense．
C．Activities that turn one's attention away．
D．Habits that make it hard for one to relax．
小題4:According to the passage, what do the three people have in common?
A．Self-confidence．B．Hard work．
C．Devotion．D．Courage．

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Opened in 1971, the Magic Kingdom was the first theme park at Walt Disney World. All Disney World theme parks are open 365 days a year, although opening and closing times for each park are different from day to day. If  you are traveling without kids, try to visit it on a school day to avoid the largest crowds. If you need to visit it during a school vacation, try at least to avoid the week between Christmas and New Year’s Day and the Fourth of July.
If you are not staying at a Disney World hotel, avoid visiting the Magic Kingdom on its Extra Magic Hours days. The hotel guests get into the park early on those days, increasing the waiting time for visitors who arrive at the normal opening time.
Buy your Walt Disney World tickets online at Disney World’s website. There will be some advice on picking the right ticket. See the guide to Disney World tickets. You will also need to call in advance to make lunch or dinner reservations (預(yù)訂). Disney accepts reservations, through 1-407-WDW-DINE, up to 180 days in advance. Time does pass quickly, so you should call six months before your trip to get a lunch reservation in the castle. We suggest you should have your lunch at Cinderella’s Royal Table for your tour. If you can’t get the reservation, ask for the Liberty Tree Tavern instead.
Keep in mind that to reach the Magic Kingdom, you must park at Disney World’s Transportation and Ticket Center (TTC) parking lot, take a tram (有軌電車), and then take a boat across the Seven Seas Lagoon to the Magic Kingdom.
小題1:We learn from the passage that ______.
A．children are not allowed to visit Disney World on New Year’s Day
B．Disney World theme parks have the same opening and closing times
C．a(chǎn) single adult had better visit the Magic Kingdom on a school day
D．the Magic Kingdom was the earliest theme park in the world
小題2:If you want to have dinner in the Walt Disney World, you can ______.
A．see the guide to Disney World tickets to reserve a table
B．make a call to reserve a table for dinner in advance
C．use 1-407-WDW-DINE to reserve about 3 months in advance
D．go to Cinderella’s Royal Table or the Liberty Tree Tavern at any time you like
小題3:Which of the following is TRUE according to passage?
A．Disney World theme parks will be closed on Christmas Day.
B．The only way to get Walt Disney World tickets is to buy them online.
C．Visitors have to reach the Magic Kingdom by tram and then boat.
D．The Magic Kingdom has Extra Magic Hours every day.
小題4:What would be the best title for this passage?
A．The History of the Magic Kingdom
B．A Brief Introduction to the Magic Kingdom
C．Advice on Making a Trip to the Magic Kingdom
D．The Most Important Theme Park at Walt Disney World

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：完形填空

Have you ever wished that you could make your little sister’s teddy bear talk to her? Or have you ever wanted to bring a puppet (木偶) to life? If so, you may be interested in learning the art of ventriloquism (腹語(yǔ)術(shù)). A ventriloquist can make an ordinary object seem to be alive by giving it a personality, movement, and speech.
Your object can be a puppet, or a doll. Give your new “friend” a name, and then decide on the personality that he will have. The next step is to give your friend movements that agree with the personality you have chosen.
Now you can learn to make your “friend” talk. A ventriloquist will control his mouth and lips so that it will appear that his voice is coming from the object he is using. This will take practice, but you can do it.
First, decide on a voice that is different from your own. It could be higher or lower than yours, or could even have a special accent. Then, find a clean teaspoon and hold the handle between your front teeth. Now, using the voice you created for your friend and holding the handle of the teaspoon tightly between your teeth, look into a mirror and talk. Practicing with the spoon in your mouth will help you learn to keep your mouth from moving. Now try telling a joke in your normal voice and have your friend speak in his voice. Practice those words until you can say them without your lips moving at all.
Ventriloquism is fun. It also requires hard work to become good at it. The most important thing to do is practice. But if you are willing to take the time to give your friend an interesting personality, to practice lively movements, and to work on good mouth control, then you will be well on your way to becoming a ventriloquist!
小題1:According to the text, a ventriloquist           .
A．is a person who can make puppets
B．needs to work with another person
C．can speak without using his mouth
D．can make an object seem to speak
小題2:You need to hold the handle of a teaspoon between your front teeth so that           .
A．your voice will change
B．your mouth won’t move
C．you can look humorous
D．you can feel your mouth’s movements
小題3:If you want to be good at ventriloquism, you         .
A．need to spend much time practicing
B．must learn from famous ventriloquists
C．should learn at least one special accent
D．must have a great doll to practice with
小題4:What would be the best title for the text?
A．How to tell jokes
B．How to make puppets
C．Secrets of ventriloquism
D．Tips on making friends

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Some people learn a second language easily. Other people have trouble learning a new language. How can you help yourself learn a new language, such as English? There are several ways to make learning English a little easier and more interesting.
The first step is to feel positive about learning English. If you believe that you can learn, you will learn. Be patient. You do not have to understand everything all at once. It is natural to make mistakes when you learn something new. We can learn from our mistakes. In other words, do not worry about taking risks,
The second step is to practice your English. For example, write in a journal, or diary, every day. You will get used to writing in English, and you will feel comfortable expressing your ideas in English. After several weeks, you will see that your writing is improving. In addition, you must speak English every day. You can practice with your classmates outside class. You will all make mistakes, but gradually you will become comfortable communicating in English.
The third step is to keep a record of your language learning. You can write this in your journal. After each class, think about what you did. Did you answer a question correctly? Did you understand something the teacher explained? Perhaps the lesson was difficult, but you tried to understand it. Write these accomplishments in your journal.
小題1:To feel positive（積極的） about learning English means_______
A．if you are patient, you will learn
B．you can understand everything all at once
C．if you make mistakes, you can learn from them
D．if you believe you can learn, you will learn
小題2:When you learn English, you do not need to _______
A．practice speaking it too much
B．to be patient and feel positive about it
C．express your ideas in English
D．understand everything all at once
小題3:What is not helpful for you to enjoy learning English?
A．To communicate in English
B．To worry about taking risks
C．To think about what has been done after class
D．To make a record of the achievements
小題4:What is the main idea of this passage?
A．It’s very important to learn a second language
B．Some people learn a second language easily while others don’t
C．There are ways to help you learn a second language easily
D．Don’t worry about taking risks when learning a second language

查看答案和解析>>

同步練習(xí)冊(cè)答案