阅读理解。     We might like to think we"re not influenced by other people, but a new

阅读理解。     We might like to think we"re not influenced by other people, but a new

题型:黑龙江省模拟题难度:来源:
阅读理解。

     We might like to think we"re not influenced by other people, but a new study into the group-buying
mechanisms(机制) - like those used on coupon(优惠券) 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 tim
e 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 a
sequential(连续的) 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.

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 simultaneous mechanism is where a group of buyers has the advantage of knowing how many
people have signed up.
C. a 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.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 somebody3. 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.
答案
1-3: CBB
举一反三
阅读理解     The practice of magic includes special words, actions, and objects. Most magic involves a person
called a magician, who claims to have supernatural powers.
     Magic words. To work most magic, the magician sings or speaks special words in a certain order.
These words are called incantations or spells. Some spells form prayers to demons(魔鬼), spirits, or
other supernatural forces. Many societies believe the magic will not work unless the magician recites the
spells perfectly. Other magic words have no meaning, though they supposedly possess power when
spoken by a magician.
     Magic actions accompany the words spoken in performing much magic. Many of these movements
act out the desired effect of the magic. For example, a magician trying to make rain fall may sprinkle(洒)
water on the ground. The magician"s combined words and actions form a ceremony.
     Magic objects include certain plants, stones, and other things with supposed supernatural powers. Any such object may be called a fetish(物神). But this term often refers to an object-for example, a carving
or a dried snake-honored by a tribe for its magic powers. Many tribes believe fetishes have magic power
because spirits live in these objects.
     Many people carry magic objects called amulets(护身符)to protect themselves from harm. Many
amulets are stones or rings engraved(雕刻) with magic symbols.
     The  magician. In some  societies,  nearly  everyone  knows  how to  work  some magic. In other
societies, only experts practice magic.Magicians may be called medicine men, medicine women,shamans,
sorcerers, or witch doctors. In many societies, magicians must inherit their powers. In others, any person
may become a magician by studying the magical arts.
     Many societies believe magicians must observe certain rules and taboos (forbidden actions) for their
spells to work. For example, they may be required not to eat various foods or to avoid sexual activity for
a certain period before the ceremony.1.What do magic words mean to people in some society? A.They have the power to kill devils.
B.They have power if magician recites the right spells.
C.They have no effect at all.
D.They can be used whenever they want.2.People believe magic actions will have an effect if they are accompanied by________.A.the spells
B.magic objects
C.stones or rings engraved with magic symbols
D.medicine 3.Why do many people believe in a fetish?A.Because it is often a ring which is worth a lot of money.
B.Because it is carved with magic symbols.
C.Because people think spirits live in it.
D.Because it can help them with many things
题型:陕西省同步题难度:| 查看答案
     I"m usually fairly skeptical about any research that concludes that people are either happier or unhappier or more or less certain of themselves than they were 50 years ago. While any of these statements might be true, they are practically impossible to prove scientifically. Still, I was struck by a report which concluded
that today"s children are significantly more anxious than children in the 1950s. In fact, the analysis showed, normal children aged 9 to 17 exhibit a higher level of anxiety today than children who were treated for
mental illness 50 years ago.
     Why are America"s kids so stressed? The report cites two main causes: increasing physical isolation
(隔离) brought on by high divorce rates and less involvement in community, among other things and a
growing perception that the world is a more dangerous place.
Considering that we_can"t_turn_the_clock_back,_adults can still do plenty to help the next generation.
     At the top of the list is nurturing(培育) a better appreciation of the limits of individualism. No child is
an island. Strengthening social ties helps build communities and protect individuals against stress.
To help kids build stronger connections with others, you can pull the plug on TVs and computers. Your
family will thank you later. They will have more time for facetoface relationships, and they will get more
sleep.
     Limit the amount of virtual(虚拟的) violence your children are exposed to. It"s not just video games
and movies; children see a lot of murder and crime on the local news.
     Keep your expectations for your children reasonable. Many highly successful people never attended
Harvard or Yale.
     Make exercise part of your daily routine. It will help you cope with your own anxieties and provide a
good model for your kids. Sometimes anxiety is unavoidable. But it doesn"t have to ruin your life.1.According to the analysis, compared with normal children today, children treated as mentally ill 50 years ago ________.A.probably suffered less from anxiety
B.were considered less individualistic
C.were less isolated physically
D.were probably less selfcentered 2.What does the author mean by saying "we can"t turn the clock back" in the third paragraph?A.It"s impossible to forget the past.
B.The social reality children are facing cannot be forgotten.
C.It"s impossible to slow down the pace of change.
D.Lessons learned from the past should not be forgotten3.The author thinks that the conclusions of any research about people"s state of mind are ________.A.illogical  
B.confusing
C.surprising  
D.questionable4.Which of the following statements is TRUE according to the passage?A.To children, anxiety is completely avoidable.
B.TV and computer play an important role in isolating children from the real world.
C.Exercise does not help to lessen children"s anxiety.
D.Sometimes local news about crime and murder also affects children a little
题型:陕西省同步题难度:| 查看答案
阅读理解     Japanese high school students either walk or ride bicycles if the distance is not too great. In other cases, students must take public buses and trains. After junior high school, students attend schools based on their high school entrance examination scores. So some students travel a great distance to attend the school.
     At school
     The school day begins at 8:30. Then students assemble in their homeroom classes for the day"s studies. Each homeroom has an average of 40-45 students. Students stay in their homeroom classrooms for most
of the school day. Only for physical education, laboratory classes, or other subjects requiring special
facilities(设备) do students move to different parts of the school. Between classes and at lunchtime,
classrooms can be noisy, lively places. Some schools may have a cafeteria(自助餐厅), but most do not.
In most schools, students bring a box lunch from home, prepared by the mother in the early morning hours.
     Japanese students spend 240 days a year at school, 60 days more than American students. Students in high schools take three years" each of the following subjects mathematics, social studies, Japanese, science, and English. Other subjects include physical education, music, art, and moral(道德的) studies. All the
students in one grade level study the same subjects. Given the number of required subjects, electives(选修科目) are few.
     Afterschool Activities
    Club activities take place after school every day.Students can join only one club, and they rarely change clubs from year to year, so the clubs are relatively stable. Clubs are made up of sports clubs ( baseball,
soccer, judo, kendo, etc.) and culture clubs(English, broadcasting, science, etc.). New students usually
are encouraged to select a club shortly after the school year begins in April. Clubs meet for two hours after school each day and many clubs continue to meet during school vacations.1.Most Japanese high school students often have their lunch________.A.in restaurants  
B.in school cafeterias
C.at home    
D.in homeroom classrooms2.Students in the USA go to school________days a year.A.180  
B.200  
C.240  
D.3003.The underlined word "rarely" in the fourth paragraph means "________".A.always  
B.never  
C.seldom  
D.often4.From the passage we know that________.A.there are less than 40 students in each class in Japanese high schools
B.students must stay in homeroom classrooms for physical education
C.there are few subjects for students to choose except the required ones
D.there will not be any club activities during school vacations
题型:陕西省同步题难度:| 查看答案
根据短文内容,从下框的A~F选项中选出能概括每一段主题的最佳选项,选项中有一项为多余项.A.  The likely reason of global warming
B.Global warming-a world problem
C.The fast increase in recent years
D.What we should do to avoid greenhouse gases producing
E.The earth is becoming warmer
F.Different opinions on the cause of global warming     1________
     Is the world warming up? According to many reports, the answer is yes. Eleven of the hottest years
since 1850 appeared between 1995 and 2006. Last year, the United Nation"s Intergovernment Panel on
Climate Change (IPCC) reported the earth was about 0.75 ? warmer than it was in 1850. While this
doesn"t sound like a lot, a small difference in average temperature can make a big difference in climate.
During the last Ice Age, the planet was only about five degrees colder than now.      
     2.________
     It"s all about the speed at which temperatures are changing. In the past,temperatures moved up or down step by step. But in the 20th century,  especially since 1976,  temperatures  have  likely risen more quickly
than during any century in the last 1000 years. Warming may bring improved harvests to northern countries such as Canada  and  Russia.  However,  many species won"t like  these  conditions.  They begin moving
towards cooler places and cause lots of trouble to human world.
     3.________
     The IPCC reported that human activity is very likely responsible for increasing the greenhouse effect.
Some gases  cause the air  to  take in  heat  energy. Without  the greenhouse effect,  the  earth"s average
temperature would be-18? rather than the present comfortable 14.6 ?. The main greenhouse gases are
carbon dioxide, water vapor and some other gases. Burning oil,coal and waste add to the carbon dioxide,
and it has increased 35% since 1850.
     4.________
     Many researchers have found that natural forces alone don"t explain the temperature increases over the
last 30 to 40 years. Their study shows that as carbon dioxide goes up, temperature will rise, too. But some scientists don"t agree. They think the effect of human produced greenhouse gases is very small compared
to the normal changes that the climate causes.
     5.________
   When asked whether humans are causing the world warming,Carl Wunsch, a professor at Massachusetts Institute of Technology says, "It seems very likely from what I"ve seen. Is it 100% sure? No. There is
something to do with natural changes." Does that mean we should have a "waitandsee" attitude? No. He
points out we buy house insurance not because we are sure our homes will be on fire, but because it"s a
danger we"d rather avoid.
题型:陕西省同步题难度:| 查看答案
完形填空     Many language learners think their pronunciation is good enough because their teacher doesn"t correct
them too often or because other students can _1_ them.
     Pronunciation is the area which is _2_ the least attention to in language learning. Most teachers _3_
just let their students speak and stop them   4   they say something completely wrong. Working on each
student"s pronunciation in class is just  5  . Also, the students who are    6   at pronunciation may be afraid
that it will embarrass their classmates if they help    7   their mistakes.
     If you believe your pronunciation is good enough to    8   because it is good enough for your teacher
and other students, you may be   9   when you actually go to a foreign country. One of my friends was
the best student in his   10   class in Poland. When he went to America, he found Americans didn"t
understand   11    of what he said.
     Your pronunciation may still be quite    12   that of a native speaker. If this is the  13  ,  other people
will find it    14   to understand what you"re saying and will not be comfortable with you. 
         15  ,  don"t think you can communicate in a foreign language   16   you"ve tested your skills on real
native speakers.    17   for native or nearnative pronunciation so that people you talk to can communicate with you  18  . In order to achieve this goal, there"s   19    that you will need to start thinking about
pronunciation and   20   time on it.
题型:天津同步题难度:| 查看答案
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(     )1. A. mistake        
(     )2. A. fixed          
(     )3. A. never          
(     )4. A. only if        
(     )5. A. fantastic      
(     )6. A. poor          
(     )7. A. find out      
(     )8. A. communicate    
(     )9. A. happy          
(     )10. A. Polish        
(     )11. A. none          
(     )12. A. near to      
(     )13. A. same          
(     )14. A. easy          
(     )15. A. In conclusion
(     )16. A. when          
(     )17. A. Stand        
(     )18. A. smoothly      
(     )19. A. no way        
(     )20. A. take          
B. watch              
B. drawn              
B. ever              
B. if only            
B. impossible        
B. well              
B. work out          
B. travel            
B. disappointed      
B. French            
B. half              
B. different from    
B. matter            
B. beneficial        
B. In a word          
B. until              
B. Look              
B. difficultly        
B. no need            
B. cost              
C. surround        
C. paid            
C. even            
C. even if        
C. necessary      
C. good            
C. try out        
C. pronounce      
C. surprised      
C. German          
C. rest            
C. far from        
C. case            
C. convenient      
C. On the contrary
C. unless          
C. Aim            
C. truly          
C. no doubt        
C. spend          
D. understand      
D. called          
D. usually        
D. if ever        
D. important      
D. strict          
D. point out      
D. exchange        
D. excited        
D. English        
D. lot            
D. from far        
D. fact            
D. hard            
D. In short        
D. while          
D. Account        
D. practically    
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D. kill