14．CoolestHotelsintheWorld
Artau Aragon Towers
      The Ariau Amazon Towers hotel lets you sleep in a tree house．Eight towers make up this
hotel that offers over 300 rooms．If you really want to get into the spirit，book the Tarzan Suite which is large enough for a big family．You'll be thirty feet up in the air and can travel between the towers through their wooden walkways．
      Prices：starting at＄300one night for each person for a regular room and goingall the way upto＄3000 for the Tarzan Suite．
      For more information，visit the website：http://Hwww．ariautowers．com
The Ice Hotel
      Every winter in Jukkasjarvi，Sweden，a special kind of hotel called the lee Hotel is built．Each year，world-famous artists are invited to design and produce works of art from the ice，many of which can be found in the rooms．You'll have your choice between hot or cold rooms but you will be well advised to stay at least one night in a cold room for a true experience．
      Prices：starting at＄318 one night for each person for either a cold room or a warm one．For more information，visit the website：http：Hwww．icehotel．com
Propeller Island
     Propeller Island City Lodge is a very special hotel that was designed by a German artist Each room provides you with the possibility of living in a work of art．Every single piece of furniture in the thirty rooms of the hotel has been hand-made and each room is completely different．You'll be able to choose a room based on your own personal tastes．
      Prices：starting at just $91 a night，and an additional （另外） person for only 20 extra dollars．For more information，visit the website：http://www．propeller-island．com
      For information about other cool hotels In the world，visit the website：http://www．bahamabeachclub．com

54．What it special about the Ariau Amazon Towers hotel？A
A．You can sleep in tree houses．
B．You can choose any of the towers．
C．It is designed for big families．
D．Every room has a walkway．
55．For more persons spending a night in one of these hotels，they have to pay at leastA
A.111          
B.182          
C.600   
D.636
56．Which website should you visit if you want to find out whether there exists a hotel under the sea？D
A．http://www．icehotel．com               
B．http://www．ariantowers．com
C．http://www．propeller-island．com        
D．htlp：∥www．bahamabeachclub．com
57．Which hotel would invite artists to come to work every year？C
A．Propeller Bland City Lodge．
B．Arian Amazon Towers．
C．The Ice Hotel．
D．Bahama Beach Club．

13．Medical drugs sometimes cause more damage than they cure．One solution to this problem is to put the drugs inside a capsule，protecting them from the body-and the body from them-until they can be released at just the right spot．There are lots of ways to trigger （引发） this release，including changing temperature，acidity，and so on．But triggers can come with their own risks-burns，for example．Now，researchers in California have designed what could be a harmless trigger to date：shining near-infrared light （NIR，近红外线） on the drug in the capsule．
The idea of using light to liberate the drug in the capsule isn't new．Researchers around the globe have developed polymers （聚合物） and other materials that begin to break down when they absorb either ultraviolet （UV，紫外线） or visible light．But tissues also readily absorb UV and visible light，which means the drug release can be triggered only near the skin，where the light can reach the capsule．NIR light largely passes through tissues，so researchers have tried to use it as a trigger．But few compounds （化合物） absorb NIR well and go through chemical changes．
That changed last year when Adah Almutairi，a chemist at the University of California，San Diego，reported that she and her colleagues had designed a polymer that breaks down when it absorbs NIR light．Their polymer used a commercially available NIR-absorbing group called o-nitrobenzyl （ONB）．When they catch the light，ONB groups fall off the polymer，leading to its breakdown．But ONB is only a so-so NIR absorber，and it could be poisonous to cells when it separates from the polymer．
So Almutairi and her colleagues reported creating a new material for capsules that's even better．This one consists of a long chain of compounds called cresol groups linked in a polymer．Cresol contains reactive（易反应的） components that make it highly unstable in its polymeric form，a feature Almutairi and her colleagues use to their advantage．After polymerizing the cresols，they cap each reactive component with a light-absorbing compound called Bhc．When the Bhcs absorb NIR light，the reactive groups are exposed and break the long polymer into two short chains．Shining additional light continues this breakdown，potentially releasing any drugs in the capsule．What's more，Almutairi says，Bhc is 10times better at absorbing NIR than is ONB and is not poisonous to cells．

63．According to the passage，which of the following could be the best trigger？B
A．Temperature change．
B．NIR light．
C．Acidity change．
D．UV light．
64．Why is ONB unsatisfactory？D
A．It breaks down when it absorbs NIR light．
B．It falls off the polymer and triggers drug release．
C．It has not come onto the market up till now．
D．It is not effective enough and could be poisonous．
65．Which word can be used to complete the following process of changes？C
A．protected         
B．formed      
C．exposed      
D．combined．

12．In the United States，there were some well-constructed houses for native Indians，ranging from the simple brush shelter to the five-storied pueblo．
  In the eastern United States，one of the existing types was that commonl y know under the Algonkian name of wigwam in which the Iroquois Indians lived．The wigwams were of wagon-top shape with straight sides and ends，made by bending young trees to form the round shape．Over this shape pieces of tree bark were laid to protect the Indians from bad weather．Over the bark dried grass was added．A small hole allowed smoke to escape from the top．Doorways at each end served also as windows，The Iroquois Indians built trunk walls all around their villages．The wall had only one opening，They could quickly close this opening if their enemies came near．
  Interestingly，the Choctaw Indians in Mississippi also lived in a wigwam of a most primitive（原始的） construction，but different from those of the Iroquois Indians．The Choctaw Indians'wigwams，made from mud，cane and straw，were in the form of a bee-hive．The covering was made of a long，tough grass．A post in the centre supported the roof．A hole in the top admitted the light，and allowed the smoke to pass out．
  The tipi tent-housing of the upper lake and plains area was put up with poles set lightly in the ground，tied together near the top，and covered with bark and grass in the lake country．It was easily portable，and two women could set it up or take it down within an hour．
  The Pawnee，Mandan and other Indian tribes （部落） along the Missouri built solid ring-shaped structures of trunk，covered with earth and dried grass，housing a dozen families．
  The Wichita and other tribes of the Texas border built large ring-shaped houses covered with dried grass．
  Apart from the regular housing，almost every tribe had some style of housing．

52．Which of the following pictures shows the house for the Iroquois Indians？A
53．According to the passage，the Pawnee Indians built their housesB．
A．with openings in the trunk walls    B．large enough for several families 
C．in a ring shape with bark and mud   D．by bending young trees t o form the shape
54．All the native Indian houses d escribed in the passage wereB．
A．of the same shape            B．covered with grass 
C．built with a post in the centre   D．built with doorways at each end
55．The passage suggests thatC
A．all the native Indians built trunk walls all around their houses 
B．all the native Indian houses were built with poles tied together
C．the Iroquois Indians took safety into account while building their wigwams
D．the Choctaw Indians in Mississippi built their wigwams with straight sides and ends．

10．The National Gallery
  Description：
  The National Gallery is the British national art museum built on the north side of Trafalgar Square in London．It houses a diverse collection of more than 2，300 examples of European art ranging from 13th-century religious paintings to more modern ones by Renoir and Van Gogh．The older collections of the gallery are reached through the main entrance while the more modern works in the East Wing are most easily reached from Trafalgar Square by a ground floor entrance．
  Layout：
  The modern Sainsbury Wing on the western side of the building houses 13th-to 15th-century paintings，and artists include Duccio，Uccello，Van Eyck，Lippi，Mantegna，Botticelli and Memling．
  The main West Wing houses 16th-century paintings，and artists include Leonardo da Vinci，Cranach，Michelangelo，Raphael，Bruegel，Bronzino，Titan and Veronese．
  The North Wing houses 17th-century paintings，and artists include Caravaggio，Rubens，Poussin，Van Dyck，Velazquez，Claude and Vermeer．
  The East Wing houses 18th-to early 20th-century paintings，and artists include Canaletto，Goya，Turner，Constable，Renoir and Van Gogh．
  Opening Hours：
  The Gallery is open every day from 10am to 6pm （Fridays 10am to 9pm） and is free，but charges apply to some special exhibitions．
  Getting There：
  Nearest underground stations：Charing Cross （2-minute walk），Leicester Square （3-minute walk），Embankment （7-minute walk），and Piccadilly Circus （8-minute walk）．

68．In which century's collection can you see religious paintings？A．
A．The 13th．B．The 17th．C．The 18th．D．The 20th．
69．Where are Leonardo da Vinci's works shown？B．
A．In the East Wing．B．In the main West Wing．
C．In the Sainsbury Wing．D．In the North Wing．
70．Which underground station is closest to the National Gallery？D．
A．Piccadilly Circus．B．Leicester Square．C．Embankment．D．Charing Cross．

9．No one is sure how the ancient Egyptians built the pyramids near Cairo．But a new study suggests they used a little rock‘n'roll．Long-ago builders could have attached wooden pole s to the stones and rolled then across the sand，the scientists say．
"Technically，I think what they're proposing is possible，"physicist Daniel Bonn said．
People have long puzzled over how the Egyptians moved such huge rocks．And there's no obvious answer．On average，each of the two million big stones weighed about as much as a large pickup truck．The Egyptians somehow moved the stone blocks to the pyramid site from about one kilometer away．
The most popular view is that Egyptian workers slid the blocks along smooth paths．Many scientists suspect workers first would haveput the blocks on sleds（滑板）．Then they would have dragged them along paths．To make the work easier，workers may have lubricated the paths either with wet clay or with the fat from cattle．Bonn has now tested this idea by building small sleds and dragging heavy objects over sand．
Evidence from the sand supports this idea．Researchers found small amounts of fat，as well as a large amount of stone and the remains of paths．
However，physicist Joseph West think there might have been a simpler way，led the new study．West said，"I was inspired while watching a television program showing how sleds might have helped with pyramid construction．I thought，‘Why don't they just try rolling the things？‘"A square could be turned into a rough sort of wheel by attaching wooden poles to its sides，he realized．That，he notes，should make a block of stone"a lot easier to roll than a square"．
So he tried it．
He and his students tied some poles to each of four sides of a 30-kilogram stone block．That action turned the block into somewhat a wheel．Then they placed the block on the ground．
They wrapped one end of a rope around the block and pulled．The researchers found they could easily roll the block along different kinds of paths．They calculated that rolling the block required about as much force as moving it along a slippery（滑的）path．
West hasn't tested his idea on larger blocks，but he thinks rolling has clear advantages over sliding．At least，workers wouldn't have needed to carry cattle fat or water to smooth the paths．

46．It's widely believed that the stone blocks were moved to the pyramid site byC．
A．rolling them on roads
B．pushing them over the sand
C．sliding them on smooth paths
D．dragging them on some poles
47．The underlined part"lubricated the paths"in Paragraph 4meansD．
A．made the path wet
B．made the path hard
C．made the path wide
D．made the path slippery
48．What does the underlined word"it"in Paragraph 7refer to？A
A．Rolling the blocks with poles attached．
B．Rolling the blocks on wooden wheels．
C．Rolling poles to move the blocks．
D．rolling the blocks with fat．
49．Why is rolling better than sliding according to West？D
A．Because more force is needed for sliding．
B．Because rolling work can be done by fewer cattle．
C．Because sliding on smooth road is more dangerous．
D．Because less preparation on path is needed for rolling．
50．What is the text mainly about？D
A．An experiment on ways of moving blocks to the pyramid site．
B．An application of the method of moving blocks to the pyramid site．
C．An argument about different methods of moving blocks to the pyramid site．
D．An introduction to a possible new way of moving blocks to the pyramid site．

8．In ancient Egypt，a shopkeeper discovered that he could attract customers to his shop simply by making changes to its environment．Modern businesses have been following his lead，with more tactics（策略）．
One tactic involves where to display the goods．Foe example，stores place fruits and vegetables in the first section．They know that customers who buy the healthy food first will feel happy so that they will buy more junk food（垃圾食品）later in their trip．In department stores，section is generally next to the women's cosmetics（化妆品） section：while the shop assistant is going back to find the right size shoe，bored customers are likely to wander over cosmetics they might want to try later．
Besides，businesses seek to appeal to customers'senses．Stores notice that the smell of baked goods encourages shopping，they make their own bread each morning and then fan the bread smell into the store throughout the day．Music sells goods，too．Researchers in Britain found that when French music was played，sales of French wine went up．
When it comes to the selling of houses，businesses also use highly rewarding tactics．They find that customers make decision in the first few second upon walking in the door，and turn it into a business opportunity．A California builder designed the structure of its houses smartly．When entering the house，the customer would see the Pacific Ocean through the windows，and then the poll through an open stairway leading to the lower level．The instant view of water on both levels helped sell these $10 million houses．

40．Why do stores usually display fruits and vegetables in the first section？C
A．To save customers times．
B．To show they are high quality foods．
C．To help sell junk food．
D．To sell them at discount prices．
41．According to Paragraph 3，which of the following encourages customers to buy？D
A．Opening the store early in the morning．
B．Displaying British wines next to French ones．
C．Inviting customers to play music．
D．Filling the store with the smell of fresh bread．
42．What is the California builder's story intended to prove？D
A．The house structure is a key factor customers consider．
B．The more costly the house is，the better it sells．
C．An ocean view is much to the customers'taste．
D．A good first impression increases sales．
43．What is the main purpose of the passage？A
A．To explain how businesses turn people into their customers．
B．To introduces how businesses have grown from the past．
C．To report researches on customer behavior．
D．To show dishonest business practices．

7．Metro Pocket Guide
Metrorail（地铁）
Each passenger needs a farecard to enter and go out．Up to two children under ago five may travel free with a paying customer．
Farecard machine are in every station，Bring small bills because there are no change machines in the station and farecard machine only provide up to 5inchange．
Get one of unlimited Metrorail rides with a One Day Pass．Buy it from a farecard machine in Metro stations．Use it after 9：30 a．m．until closing on weekdays，and all day on weekends and holidays．
Hours of Service
Open：5 a．m Mon-Fri                      7a．m．Sat-Sun．
Close：midnight Sun-Thur.3a．m．Fri-Sat．nights
Last train time vary．To avoid （避免） missing the last train，please check the last train time posted in the station．
Metrobus
When paying with exact change，the fare is 1.35．whenpayingwithasmatTrip?CARDthefareis1.25
Fares for the Senior/disabled customers
Senior citizens 65 and older and disabled customers may ride for half the regular fare．On Metrorail and Metrobus，use a senior/disabled farecard or SmarTrip? card．For more information about buying senior/disabled farecards，or SmarTrip? cards and passes，please visit MetroOpenDoors．com or call 202-637-7000 and 202-637-8000．
Senior citizens and disabled customers can get free guide on how to use proper Metrobus and Metrorail services by calling 202-962-1100
Travel tips
•Avoid riding during weekday rush periods-before 9：30 a．m．and between 4 and 6 p．m．
•If you lose something on a bus or train or in a station，please call Lost & Found at 202-962-1195．

68．What should you know about farecard machines？D
 A．They start selling tickets at 9：30 a．m．
B．They are connected to change machines．
 C．They offer special service to the elderly．
D．They make change for no more than $5．
69．At what time does Metrorail stop service on Saturday？B
A．At midnight      B．at 3 a．m        C．at 5 a．m          D．at 7 p．m．
70．What is good about a SmarTrip?card？B
A．It is convenient for old people               B．It saves money for its users
C．it can be bought at any time                  D．it is sold on the Internet．
71．Which number should you call if you lose something on the Metro？A
A.202-962-1195                              B.202-962-1100
C.202-673-7000                              D.202-673-8000．

6．The Cambridge Science Festival Curiosity Challenge
Dare to Take the Curiosity Challenge!
The Cambridge Science Festival （CSF） is pleased to inform you of the sixth annual Curiosity Challenge．The challenge invites，even dares school students between the ages of 5and 14to create artwork or a piece of writing that shows their curiosity and how it inspires them to explore their world．
Students are being dared to draw a picture，write an article，take a photo or write a poem that shows what they are curious about．To enter the challenge，all artwork or pieces of writing should be sent to the Cambridge Science Festival，MIT Museum，265Mass Avenue，Cambridge 02139by Friday，February 8^th．
Students who enter the Curiosity Challenge and are selected as winners will be honored at a special ceremony during the CSF on Sunday，April 21^st．Guest speakers will also present prizes to the students．Winning entries will be published in a book．Student entries will be exhibited and prizes will be given．Families of those who take part will be included in the celebration and brunch will be served．
Between March 10^th and March 15^th，each winner will be given the specifics of the closing ceremony and the Curiosity Challenge celebration．The program guidelines and other related information are available at：http://cambridgesciencefestival．org．

21．Who can take part in the Curiosity Challenge？A
A．School students    B．Cambridge locals     C．CSF winners     D．MIT artists．
22．When will the prize-giving ceremony be held？C
A．On February 8^th B．On March 10^th C．On April 21^st D．On March 15^th．
23．What type of writing is this text？C
A．An exhibition guide．
B．An art show review．
C．An announcement．
D．An official report．

5．There are an extremely large number of antsworldwide．Each individual （个体的） ant hardly weigh anything，but put together they weigh roughly the same as all of mankind．They also live nearly everywhere，except on frozen mountain tops and around the poles．Foranimals their size，ants have been astonishingly successful，largely due to their wonderfulsocial behavior．
In colonies （群体） that range in size from a few hundred to tens of millions，they organize their lives with a clear division of labor．Even more amazing is how they achievethis level of organization．Where we use sound and sight to communicate，ants dependprimarily on pheromone （外激素），chemicals sent out by individuals and smelled or tastedby fellow members of their colony．When an ant finds food，it produces a pheromone that will lead others straight to where the food is．When an individual ant comes under attack or is dying，it sends out an alarm pheromone to warn the colony to prepare for a conflict as a defense unit．
In fact，when it comes to the art of war，ants have no equal．They are completely fearless and will readily take on a creature much larger than themselves，attacking in large groups and overcoming their target．Such is their devotion to the common good of the colony that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy．
Behaving in this selfless and devoted manner，these little creatures have survived on Earth，for more than 140million years，far longer than dinosaurs．Because they think as one，they have a collective （集体的） intelligence greater than you would expect from itsindividual parts．

68．We can learn from the passage that ants areB．
A．not willing to share food
B．not found around the poles
C．more successful than all other animals
D．too many to achieve any level of organization
69．Ants can use pheromones forB．
A．escape
B．communication
C．warning enemies
D．arranging labor
70．What does the underlined expression"take on"in Paragraph 3mean？D
A．Accept．
B．Employ．
C．Play with．
D．Fight against．
71．Which of the following contributes most to the survival of ants？A
A．Their behavior．
B．Their size．
C．Their number．
D．Their weight．