Many people think of the brain as a mystery.They don't know much about intelligence and how it works.When they do think about what intelligence is，many people believe that a person is born smart，average，or dumb—and stays that way in the whole life.But new research shows that the brain is more like a muscle—it changes and gets stronger when you use it.And scientists have been able to show just how the brain grows and gets stronger when you learn.
Everyone knows that when you lift weights，your muscles get bigger and you get stronger.A person who can't lift 20 pounds when he/she starts exercising can get strong enough to lift 100 pounds after working out for a long time.That's because the muscles become larger and stronger with exercise.And when you stop exercising，the muscles shrink and you get weaker.That's why people say “Use it or lose it！”
But most people don't know that when they practice and learn new things，parts of their brain change and get larger a lot like muscles do when they exercise. Inside the cortex(皮层)of the brain are billions of tiny nerve cells，called neurons. The nerve cells have branches connecting them to other cells in a complicated network. Communication between these brain cells is what allows us to think and solve problems. When you learn new things，these tiny connections in the brain actually multiply and get stronger.The more you challenge your mind to learn，the more your brain cells grow.Then，things that you once found very hard or even impossible to do—like speaking a foreign language or doing algebra(代数)—seem to become easy after learning them for a period of time.The result is a stronger，smarter brain.
Scientists started thinking that the human brain could develop and change when they studied animals'brains.They found out that animals that lived in a challenging environment were more perspicacious—they were better at solving problems and learning new things.According to the first paragraph，________.
| A．the function of our brain is like that of the muscle |
| B．until now it's impossible to explain the brain's mystery |
| C．many people believe one's intelligence is naturally determined |
| D．one's brain grows stronger as the age increases |
Training muscles is compared to ________.
| A．using the brain |
| B．connecting things in your brain |
| C．lifting weights |
| D．doing research about the brain |
What does the underlined word“perspicacious”in the last paragraph probably mean?
| A．Strong. | B．Smart. |
| C．Popular. | D．Active. |
The following paragraph will most probably talk about ________.
| A．the differences between animals'brains and humans'brains |
| B．the relation between human brains and muscles |
| C．scientists' findings about animals' brains |
| D．how to make your brain smarter through selfdevelopment |
President Barack Obama has complained about the loss of privacy that comes with being leader of the United States, regretting the loss of simple pleasures such as a long walk or a trip to the car wash or supermarket. "I just miss—I miss being anonymous," he said. "I miss Saturday morning, rolling out of bed, not shaving, getting into my car with my girls, driving to the supermarket, squeezing the fruit, getting my car washed, taking walks. I can't take a walk." His dream, he said, was to "go through Central Park and watch folks passing by... spend the day watching people—I miss that".
Faced with angry criticism for playing more golf than most previous occupants of the White House, he explained that the sport was simply the best way of getting away from it all. "It's the only excuse I have to get outside for four hours in a row, he told Hearst Magazines.
Though he said he enjoyed his life in the White House, he felt disappointed with some of the ways of Washington, which he has failed in his pledge(保证) to change, such as the "kabuki dance( 日本歌伎舞)" among political parties before serious policy discussions begin. His comments may be seen as vindication(证实) by critics who have accused him of appearing too detached (超然的), and being slow to engage in vital issues such as Libya and the near shutdown of the US government last week.
Since arriving at the White House in January 2009, Mr Obama has already racked up (得分)60 rounds of golf in office, more than George W. Bush did in his eight years.
In terms of ability, Golf Digest magazine has ranked Mr Obama eighth out of the 18 presidents who played the game since it became established in the early 20th century.What can be inferred from the first paragraph about Barack Obama after he became the US president?
| A．He liked living a busy life. |
| B．He used to wash his car himself. |
| C．He used to spend most of his time with his family. |
| D．He is unhappy with being too frequently watched by the public. |
Barack Obama's explanation to playing golf is.
| A．to keep fit | B．to enjoy life |
| C．to release his pressure | D．to balance his work |
Which one of the following statements is from the critics?
| A．The president is really a great golf player. |
| B．There are always unnecessary procedures among political parties. |
| C．The president lost a lot privacy, but he loves the life in the White House. |
| D．The president seems to have no interest in some really important issues. |
According to the text, which of the following statements is TRUE about Barack Obama?
| A．He regrets to become the US president. |
| B．He has lost privacy ever since he became president. |
| C．He couldn't play too much golf' because of people being angry with him. |
| D．He is not good at playing golf compared with the other presidents who played golf. |
Teachers say the digital age has had a good influence - and a not-so-good influence - on this generation of American teenagers．More than 2,000 teachers took an online survey．Three-quarters of the teachers said the Internet and digital search tools have had a "mostly positive" effect on their students' research habits and skills．But 64 percent said the technologies "do more to distract（使 - - - ---分心） students than to help them academically．" And 87 percent agreed that these technologies are creating an "easily distracted generation with short attention spans．"
The Pew Internet Project did the survey with the National Writing Project．Judy Buchanan is the vice director of the National Writing Project and a co-author of the report．Ms．Buchanan says digital research tools are helping students learn more and faster．"Teachers really favor these tools because they are ways to make some of the learning exciting and engaging．Young people favor these tools．The goal is to really help them become creators of meaningful content, and not just sort of consumers．"
But one problem the survey found is that many students lack digital literacy．They trust too muck of the information they find on the Internet．Judy says these students haven't developed the skills to determine the quality of online information．"It's something that really has to be taught and paid attention to．Because in a world in which things happen quickly, you do need to step back, reflect and analyze the information you have．"
Another problem is blamed on something that might not seem like a problem at all: being able to quickly find information online．Teachers say the result is a reduction in the desire and ability of their students to work hard to find answers．They say students are overly dependent on search engines and do not make enough use of printed books or research libraries．
Many teachers are also concerned that the Internet makes it easy for students to copy work done by others instead of using their own abilities．The text mainly tells us____．
| A．all the students use digital tools |
| B．the Internet is playing a key role |
| C．teachers encourage using digital tools |
| D．digital tools bring about benefits and problems |
Which of the following best shows the structure of the text?
The underlined sentence in the third paragraph probably means__________.
| A．students do not have the right digital tools |
| B．students do not always have access to the Internet |
| C．students haven't the ability to adjust themselves |
| D．students can't judge online information properly |
Some students don't tend to work hard because__________.
| A．they can get answers on the Internet quickly |
| B．printed books and libraries around aren't enough |
| C．the Internet can't make students concentrate |
| D．they can copy each others' work without being punished |
Helen Thomas, the pioneering White House reporter known for putting presidents on the hot seat, died at 92．
To those who regularly watch presidential press conferences, Helen Thomas is a familiar figure．Usually dressed in red and always seated in the front row, she is always the first or second reporter the president calls upon．It is an honor she has earned．Besides, it affords her the perfect opportunity to do what she does best - challenge the president and other public officials to tell the plain truth．She said, "We reporters' priority（首要事情） is the people's right to know - without fear or favor．We are the people's servants．"
Helen Thomas was born in Kentucky in 1920．All the nine Thomas children were brought up to value education, and all were expected to make something of themselves through working hard．She made up her mind while still in high school to become a reporter after writing for the student newspaper．After receiving her bachelor's degree in 1942, Thomas headed straight for Washington, D．C．in search of a newspaper job．Before long, she landed one at Washington Daily News．Her duty included fetching coffee and doughnuts for the paper's reporters and editors．The eager young woman found the atmosphere exciting and was convinced she had made the right career choice．
Her big break came when she was sent to Florida to report on the vacation of President-elect John F．Kennedy and his family．Once President Kennedy took office, Thomas changed her focus from the president's family to his policies．She began attending the daily press briefings at the White House as well as presidential press conferences．Thomas has covered every president since Kennedy．Over the years, Thomas found her job "thrilling and inspiring," but never boring．And she took very seriously her duty to "keep an eye on the president" and keep American people informed．What can we learn about Helen Thomas from the passage?
| A．Her career took off after covering the Kennedys． |
| B．Her first job was to deliver doughnuts to a news agency． |
| C．She was born to a large family in Kentucky in 1942． |
| D．She decided to be a reporter while in college． |
Paragraph 3 is written to show Helen Thomas__________.
| A．is a good decision maker for her career |
| B．appreciates education and hard work |
| C．wants to be famous by writing reports |
| D．has great support from her family |
What does Helen Thomas think other work?
| A．Unbearable． | B．Exciting． | C．Challenging． | D．Unforgettable． |
What can be the best title for the text?
| A．A reporter sticking to the facts． |
| B．A reporter challenging President Kennedy． |
| C．A reporter from an ordinary family． |
| D．A reporter for Washington Daily News． |
If you see a group of people dancing and singing on the street or in the railway station, you don't need to feel surprised．They are a flash mob （快闪族）, which is a group of people who come together suddenly in a public place, do something unusual for a brief period of time, and then quickly break up．They are usually organized with the help of the Internet or other digital communication network．At a predetermined time, they gather and perform some distractions（消遣） such as waving their hands and exchanging books, Then, they quickly break up before the police can arrive．Using mobile phones, the flash mob can change its location if the first one has been replaced for any reason．
Bill Lasik, senior editor of Harper’s Magazine, organized the first flash mob in Manhattan in May 2003 and the first successful flash mob came together on June 3, 2003 - after the first attempt was foiled at Macy's department store．Lasik claimed that the activity was designed to make fun of hipsters （起时髦的人）, and call attention to the cultural atmosphere．
Flash mob gatherings can sometimes shock people．Such an activity might seem amusing and untrue, but it also might frighten people who are not aware of what is taking place．Undoubtedly, flash mobs can serve as good political tools in any direction．They also have great economic potential, such as using flash mobs to advertise a product．
The flash mob is now becoming more and more popular．People use it to do many things．For example, in 2009, Michael Jackson's fans took part in a flash mob to remember him．Hundreds of his fans gathered singing and dancing Michael's famous song "Beat It" together．Flash mobs give people from all walks of life an opportunity to come together to create a memory．The undefined word "foiled" in Paragraph 2 can be replaced by _。
| A．forgotten | B．prevented |
| C．announced | D．confirmed |
What can you learn about the flash mob from the passage?
| A．The flash mob usually breaks up quickly for lacking enough time． |
| B．Once the place for the activity is determined, it can't be changed． |
| C．The flash mob can be made use offing many fields just for fun． |
| D．It gives people the chance to come together to do something unusual． |
The main purpose of the passage is __________.
| A．to entertain | B．to encourage |
| C．to inform | D．to persuade |
The writer's attitude towards the flash mob is__________.
| A．negative | B．favorable |
| C．objective | D．doubtful |
How cool can libraries be in an era（时代）of iPods and Kindles? More than you think．Only if you know where to go．
Central Library: Seattle, Washington, United States
The Central Library in Seattle is modern and fashionable and has tourists from around the world paying visits and taking tours．It was designed by Dutch architect Rem Koolhaas and American designer Joshua Ramus．Tours began in 2006, two years after its opening．The library holds various art exhibitions, book signings and other events, while visitors can stop by the Chocolate cart for a coffee and scan through the gift shop anytime
Trinity College Library: Dublin, Ireland
The Trinity College Library in Dublin is the oldest library in Ireland, founded in 1592 by Queen Elizabeth I．It is the largest single library in the world, also known as the Long Room, which contains more than 200,000 0fthe library's oldest books．The Long Room houses one of the oldest harps（竖琴） in Ireland．Dating to the 15th century, the old harp is the model for the symbol foreland．
Geisel Library, University of California: San Diego, United States
At first glance, it looks like a spaceship．Architect William Pereira, who helped design actual space launch facilities at Cape Canaveral in Houston, Texas, designed the library in 1970．It has been featured in sci-fi films, short stories and novels．The library hosts "Dinner in the Library," which invites readers for cocktails, and also a special speech from distinguished authors．
TU Delft Library: The Netherlands
The library at the Delft University of Technology was constructed in 1997 and has more than 862,000 books, 16,000 magazine subscriptions and its own museum．The building itself exists beneath the ground, so you can't really see the actual Library．What makes it interesting is the roof, which is a grassy hill．The roof covers 5,500 square meters．And it has become one of the most striking and greenest structures in the area．Which of the four libraries has the longest history?
| A．Central Library． | B．Geisel Library． |
| C．Trinity College Library． | D．TU Delft Library． |
What makes Geisel Library different from the others is that__________.
| A．famous writers often deliver speeches there |
| B．it has a reoffer grassy hill |
| C．Queen Elizabeth I founded the library |
| D．it is the largest single library in the world |
In Central Library, you can__________.
| A．buy souvenirs | B．enjoy sci-fi films |
| C．drink cocktails | D．see the old harp |