完形填空。     Sea turtles are found in all warm waters throughout the world. Sea tur

完形填空。     Sea turtles are found in all warm waters throughout the world. Sea tur

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完形填空。     Sea turtles are found in all warm waters throughout the world. Sea turtles are the___1____ of the
turtles. The largest kind of sea turtle can grow as long as eight feet and ___2___ 1,500 pounds. Even
the smallest kind, Kemp"s-Ridley, can ___3___ to 28 inches long and weigh almost 100 pounds. Many
other turtles are small enough to___4___ in your hand. It is difficult to find population numbers for sea
turtles because they do not___5____ shore once they hatch and reach the ocean, which makes it hard
to ___6___ them. Sea turtles___7___ in the water because they are safer there. They cannot___8___
their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __9___
other animals that want to eat them. They need to move quickly to stay safe.
     When the weather ___10___ warm, sea turtles leave the ocean to___11___ their eggs on the beach.
This is the only time they will ever leave the water. Most___12____ turtles spend part of the time in
water___13___ part of the time on land. It is easy to understand___14____ sea turtles stay in the
water. Their___15___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet
make it hard for them to ___16___ on land. They are better___17___ for life in the water. They are well
suited for life in the sea because of__18___ their bodies are made.
     The way their feet are made helps sea turtles swim very quickly. Their feet look like long __19___.
When they swim, they flap their feet like a bird flaps its wings. This ___20___ way of swimming benefits
sea turtles. It allows them to escape from their enemies.
答案
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(     ) 1. A.dwarfs    
(     ) 2. A.measure    
(     ) 3. A.grow up    
(     ) 4. A.suit      
(     ) 5. A.go to      
(     ) 6. A.keep up with
(     ) 7. A.swim      
(     ) 8. A.push      
(     ) 9. A.away      
(     )10. A.becomes    
(     )11. A.lay        
(     )12. A.the other  
(     )13. A.but        
(     )14. A.when      
(     )15. A.technique  
(     )16. A.walk      
(     )17. A.adopted    
(     )18. A.the way    
(     )19. A.paddles    
(     )20. A.abnormal  
B. giants      
B. weigh      
B. bring up    
B. fit        
B. turn to    
B. keep track of
B. hide        
B. draw        
B. from        
B. turns      
B. lie        
B. another    
B. and        
B. where      
B. talent      
B. travel      
B. adapted    
B. the manner  
B. sticks      
B. unusual    
C. mammals        
C. sell            
C. take up        
C. match          
C. back to        
C. keep in touch with
C. sleep          
C. drag            
C. for            
C. changes        
C. laid            
C. other          
C. or              
C. why            
C. ability        
C. wander          
C. adequate        
C. the method      
C. wings          
C. ordinary        
D. ancestors    
D. sound        
D. go up        
D. seize        
D. return to    
D. keep to      
D. stay          
D. pull          
D. to            
D. leads        
D. lain          
D. others"      
D. so            
D. as            
D. opportunity  
D. play          
D. admitted      
D. the shape    
D. tails        
D. unbelievable  
1-5: BBABD   6-10:   BDDBB    11-15:   ACBCC   16-20:   BBAAB
阅读理解。
     They may be small and not able to speak, but babies are proving their amazing cleverness. Scientists
began finding infants" skills are more than they are supposed to be.
_________
     Speaking of music, babies can"t seem to resist it. Not only are their ears turned to the beats, babies
can actually dance to the music.
     To test babies" dancing ability, the researchers played recordings of classical music, rhythmic beats
and speech to infants, and recorded the results. They also invited professional dancers to analyze how
well the babies matched their movements to the music. The babies moved their arms, hands, legs feet
and heads in response to the music, much more than to the speech. The finding suggests this dancing
ability is innate(与生俱来的) in humans, though the researchers aren"t sure why it becomes weaker
later in their life.
     Learning Quickly while Sleeping
     Babies can learn even while asleep, according to a 2011 study. In experiments with 26 sleeping
infants, each just 1 to 2 days old, scientists played a musical tone followed by a puff of air to their eyes
200 times over the course of a half-hour. 124 electrodes(电极) stuck on the head and face of each
baby recorded brain activity during the experiments. The babies rapidly learned to foretell a puff of air
upon hearing the tone, showing a four-time increase on average in the chances of tightening their eyelids
in response to the sound by the end of the experiments.
     As newborns spend most of their time asleep, this newfound ability might be crucial to rapidly
adapting to the world around them and help to ensure their survival, researchers said.
     Judging Characters Well
     Judging another person helpful or harmful is crucial when choosing friends. And that ability starts
early. Kiley Hamlin of Yale University showed both 6-and 10-month-olds a puppet(木偶) show, in
which one character helped another climb a hill. In another scene a third character pushed the climber
down. The little ones then got to choose which character they preferred. For both age groups, most
babies chose the helper character. This character-judging ability could be baby"s first step in the
formation of morals, Hamlin thought.
1. Which of the following subtitles can fill in the underlined blank?               
A. Dancing to Music                
B. Babies" Amazing Abilities
C. Learning to Dance Quickly          
D. Born to Dance
2. The underlined word "it" in the third paragraph refers to______.
A. the finding                      
B. the dancing ability    
C. the response                      
D. the baby
3. The experiment with 26 sleeping infants prove that_______.
A. babies can learn even while asleep
B. babies can respond to the world around them
C. babies can tighten their eyelids in response to the sound
D. babies can communicate with others while asleep
4. In the last experiment, most babies chose the helper character, showing that________.
A. babies can judge a person helpful or harmful
B. babies love to see a puppet show
C. babies were born to help others
D. babes have learned to help others 
阅读理解。
     Mobile phones are an important business tool for farmers in rural areas. But they also put a valuable
educational tool in their hands.
     The University of Illinois in the United States has a project called SAWBO-Scientific Animations
Without Borders. It produces educational videos that can be downloaded to cell phones. The goal is to
help people in developing countries improve their lives.
      One video shows farmers how to make a natural insecticide from neem seeds to prevent insect
damage to crops. The process starts with sorting and drying the neem fruits. Then let the fruit dry in the
sun for about three or four days, until they become brown. Using a mortar(碾槌) and stick, the fruits are
slightly pounded to remove the shells from the fruits without breaking the seed inside.
      The videos use computer animation(动画). Some of the animated characters are a little funny
looking-like a farmer with a long nose. But the subjects are serious, including a health video on preventing cholera(霍乱). Team member Francisco Seufferheld says the information in the videos is meant to be
quickly understood. He says, "The information is digested in such a way that in two minutes, we can
transmit a complex idea."
     The researchers tested the seven-minute video on seven mobile phones. They wanted to see if
people would share the video using Bluetooth wireless technology. With Bluetooth, files can be passed
to a nearby phone even if neither phone is connected to the Internet. As a result, in one month, the video
had spread to one hundred eighteen people in fifty different villages. "This is just incredible impact," said
Francisco Seufferheld.
     The team has made a few videos so far. These are available in a total of eighty languages, dialects and
accents. Professor Barry Pittendrigh says there are plans for more videos later this year.
1. What is the text mainly about?
A. A best-selling mobile phone                  
B. A valuable educational project for farmers
C. United States support for developing countries    
D. A new type of scientist -farmer relationship
2. The SAWBO program is introduced in order to ____.
A. raise farmers" standard of living                
B. do some research on mobile phones
C. develop farmers" practical skills                
D. help farmers prevent insect damage to corps
3. The biggest advantage of the program is that it______.
A. includes health video on preventing cholera      
B. can be passed to farmers using Bluetooth technology
C. can be used to sort and dry the neem fruits      
D. is easy for farmers to understand
4. Which of the following words can best take the place of the word " pound" in the 3rd paragraph?
A. moved            
B. beat            
C. picked            
D. cut
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 somebody
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.
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
     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 forgotten
3.The author thinks that the conclusions of any research about people"s state of mind are ________.
A.illogical  
B.confusing
C.surprising  
D.questionable
4.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