1 . Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1. Why are race walkers conditioned athletes?| A．They must run long distances. |
| B．They are qualified for the marathon. |
| C．They have to follow special rules. |
| D．They are good at swinging their legs. |
| A．It’s more popular at the Olympics. |
| B．It’s less challenging physically. |
| C．It’s more effective in body building. |
| D．It’s less likely to cause knee injuries. |
| A．Getting experts’ opinions. |
| B．Having a medical checkup. |
| C．Hiring an experienced coach. |
| D．Doing regular exercises. |
| A．Skeptical. | B．Objective. |
| C．Tolerant. | D．Conservative. |
2 . Journey Back in Time with Scholars
Classical Provence(13days)Journey through the beautiful countryside of Provence，France，with Prof. Ori Z. Soltes. We will visit some of the best-preserved Roman monuments in the world. Our tour also includes a chance to walk in the footsteps of Van Gogh and Gauguin. Fields of flowers, tile-roofed(瓦屋顶)villages and tasty meals enrich this wonderful experience.
Southern Spain(15days)
Spain has lovely white towns and the scent(芳香)of oranges，but it is also a treasury of ancient remains including the cities left by the Greeks，Romans and Arabs. As we travel south from Madrid with Prof. Ronald Messier to historic Toledo，Roman Merida and into Andalucia, we explore historical monuments and architecture.
China’s Sacred Landscapes(21days)
Discover the China of “past ages,” its walled cities，temples and mountain scenery with Prof. Robert Thorp. Highlights(精彩之处)include China’s most sacred peaks at Mount Tai and Hangzbou’s rolling hills，waterways and peaceful temples. We will wander in traditional small towns and end our tour with an exceptional museum in Shanghai.
Tunisia(17days)
Join Prof. Pedar Foss on our in-depth Tunisian tour. Tour highlights include the Roman city of Dougga，the underground Numidian capital at Bulla Regia, Roman Sbeitla and the remote areas around Tataouine and Matmata，uique for underground cities. Our journey takes us to picturesque Berber villages and lovely beaches.
1. What can visitors see in both Classical Provence and Southern Spain？
| A．Historical monuments. | B．Fields of flowers. |
| C．Van Gogh’s paintings. | D．Greek buildings. |
| A．France. | B．Spain. | C．China. | D．Tunisia. |
| A．White towns. | B．Underground cities. | C．Tile-roofed villages. | D．Rolling hills. |
3 . I have a special place in my heart for libraries. I have for as long as I can remember. I was always an enthusiastic reader, sometimes reading up to three books a day as a child. Stories were like air to me and while other kids played ball or went to parties, I lived out adventures through the books I checked out from the library.
My first job was working at the Ukiah Library when I was 16 years old .It was a dream job and I did everything from shelving books to reading to the children for story time.
As I grew older and became a mother, the library took on a new place and an added meaning in my life. I had several children and books were our main source(来源) of entertainment. It was a big deal for us to load up and go to the local library, where my kids could pick out books to read or books they wanted me to read to them.
I always read ,using different voices ,as though I were acting out the stories with my voice and they loved it !It was a special time to bond with my children and it filled them with the wonderment of books .
Now, I see my children taking their children to the library and I love that the excitement of going to the library lives on form generation to generation.
As a novelist, I’ve found a new relationship with libraries. I encourage readers to go to their local library when they can’t afford to purchase a book. I see libraries as a safe haven(避风港) for readers and writers, a bridge that helps put together a reader with a book. Libraries, in their own way, help fight book piracy(盗版行为) and 1 think all writers should support libraries in a significant way when they can. Encourage readers to use the library. Share library announcements on your social media. Frequent them and talk about them when you can.
1. Which word best describes the author’s relationship with books as a child?| A．Cooperative. | B．Uneasy. | C．Inseparable. | D．Casual. |
| A．Pleasure from working in the library. |
| B．Joy of reading passed on in the family. |
| C．Wonderment from acting out the stories. |
| D．A closer bond developed with the readers. |
| A．Sponsor book fairs. | B．Write for social media. |
| C．Support libraries. | D．Purchase her novels. |
| A．Reading: A Source of Knowledge |
| B．My Idea about writing |
| C．Library: A Haven for the Young |
| D．My Love of the Library |
4 . In the mid-1990s, Tom Bissell taught English as a volunteer in Uzbekistan. He left after seven months, physically broken and having lost his mind. A few years later, still attracted to the country, he returned to Uzbekistan to write an article about the disappearance of the Aral Sea.
His visit, however, ended up involving a lot more than that. Hence this book, Chasing the Sea: Lost Among the Ghosts of Empire in Central Asia, which talks about a road trip from Tashkent to Karakalpakstan, where millions of lives have been destroyed by the slow drying up of the sea. It is the story of an American travelling to a strange land, and of the people he meets on his way: Rustam, his translator, a lovely 24-year-old who picked up his colorful English in California, Oleg and Natasha, his hosts in Tashkent, and a string of foreign aid workers.
This is a quick look at life in Uzbekistan, made of friendliness and warmth, but also its darker side of society. In Samarkand, Mr Bissell admires the architectural wonders, while on his way to Bukhara he gets a taste of police methods when suspected of drug dealing. In Ferghana, he attends a mountain funeral(葬礼)followed by a strange drinking party. And in Karakalpakstan, he is saddened by the dust storms, diseases and fishing boats stuck miles from the sea.
Mr Bissell skillfully organizes historical insights and cultural references, making his tale a well-rounded picture of Uzbekistan, seen from Western eyes. His judgment and references are decidedly American, as well as his delicate stomach. As the author explains, this is neither a travel nor a history book, or even a piece of reportage. Whatever it is, the result is a fine and vivid description of the purest of Central Asian traditions.
1. What made Mr Bissell return to Uzbekistan?| A．His friends' invitation. | B．His interest in the country. |
| C．His love for teaching. | D．His desire to regain health. |
| A．Developing a serious mental disease. |
| B．Taking a guided tour in Central Asia. |
| C．Working as a volunteer in Uzbekistan. |
| D．Writing an article about the Aral Sea. |
| A．Romantic. | B．Eventful. | C．Pleasant. | D．Dangerous. |
| A．To introduce a book. | B．To explain a cultural phenomenon. |
| C．To remember a writer. | D．To recommend a travel destination. |
5 . Rainforests are home to a rich variety of medicinal plants, food, birds and animals. Can you believe that a single bush（灌木丛）in the Amazon may have more species of ants than the whole of Britain! About 480 varieties of trees may be found in just one hectare of rainforest.
Rainforests are the lungs of the planet-storing vast quantities of carbon dioxide and producing a significant amount of the world's oxygen. Rainforests have their own perfect system for ensuring their own survival; the tall trees make a canopy（树冠层）of branches and leaves which protect themselves, smaller plants, and the forest animals from heavy rain, intense dry heat from the sun and strong winds.
Amazingly, the trees grow in such a way that their leaves and branches, although close together, never actually touch those of another tree. Scientists think this is the plants' way to prevent the spread of any tree diseases and make life more difficult for leaf-eating insects like caterpillars. To survive in the forest, animals must climb, jump or fly across the gaps. The ground floor of the forest is not all tangled leaves and bushes, like in films, but is actually fairly clear. It is where dead leaves turn into food for the trees and other forest life.
They are not called rainforests for nothing! Rainforests can generate 75%of their own rain. At least 80 inches of rain a year is normal-and in some areas there may be as much as 430 inches of rain annually. This is real rain-your umbrella may protect you in a shower, but it won't keep you dry if there is a full rainstorm. In just two hours, streams can rise ten to twenty feet. The humidity（湿气）of large rainforests contributes to the formation of rainclouds that may travel to other countries in need of rain.
1. What can we learn about rainforests from the first paragraph?| A．They produce oxygen. | B．They cover a vast area. |
| C．They are well managed. | D．They are rich in wildlife. |
| A．Heavy rains | B．Big trees. |
| C．Small plants. | D．Forest animals. |
| A．For more sunlight. | B．For more growing space. |
| C．For self-protection. | D．For the detection of insects. |
| A．Life-Giving Rainforests | B．The Law of the Jungle |
| C．Animals in the Amazon | D．Weather in Rainforests |
6 . I work with Volunteers for Wildlife, a rescue and education organization at Bailey Arboretum in Locust Valley. Trying to help injured, displaced or sick creatures can be heartbreaking; survival is never certain. However, when it works, it is simply beautiful.
I got a rescue call from a woman in Muttontown. She had found a young owl(猫头鹰) on the ground. When I arrived, I saw a 2-to 3-week-old owl. It had already been placed in a carrier for safety.
I examined the chick(雏鸟) and it seemed fine. If I could locate the nest, I might have been able to put it back, but no luck. My next work was to construct a nest and anchor it in a tree.
The homeowner was very helpful. A wire basket was found. I put some pine branches into the basket to make this nest safe and comfortable. I placed the chick in the nest, and it quickly calmed down.
Now all that was needed were the parents, but they were absent. I gave the homeowner a recording of the hunger screams of owl chicks. These advertise the presence of chicks to adults; they might also encourage our chick to start calling as well. I gave the owner as much information as possible and headed home to see what news the night might bring.
A nervous night to be sure, but sometimes the spirits of nature smile on us all! The homeowner called to say that the parents had responded to the recordings. I drove over and saw the chick in the nest looking healthy and active. And it was accompanied in the nest by the greatest sight of all — LUNCH! The parents had done their duty and would probably continue to do so.
1. What is unavoidable in the author’s rescue work according to paragraph 1?| A．Efforts made in vain. |
| B．Getting injured in his work. |
| C．Feeling uncertain about his future. |
| D．Creatures forced out of their homes. |
| A．To rescue a woman. |
| B．To take care of a woman. |
| C．To look at a baby owl. |
| D．To cure a young owl. |
| A．A new nest. |
| B．Some food. |
| C．A recording. |
| D．Its parents. |
| A．It’s unexpected. |
| B．It’s beautiful. |
| C．It’s humorous. |
| D．It’s discouraging. |
7 . Pacific Science Center Guide
◆Visit Pacific Science Center’s Store
Don’t forget to stop by Pacific Science Center’s Store while you are here to pick up a wonderful science activity or souvenir to remember your visit. The store is located(位于) upstairs in Building 3 right next to the Laser Dome.
◆Hungry
Our exhibits will feed your mind, but what about your body? Our café offers a complete menu of lunch and snack options, in addition to seasonal specials. The café is located upstairs in Building 1 and is open daily until one hour before Pacific Science Center closes.
◆Rental Information
Lockers are available to store any belongings during your visit. The lockers are located in Building 1 near the Information Desk and in Building 3. Pushchairs and wheelchairs are available to rent at the Information Desk and Denny Way entrance. ID required.
◆Support Pacific Science Center
Since 1962, Pacific Science Center has been inspiring a passion(热情) for discovery and lifelong learning in science, math and technology. Today, Pacific Science Center serves more than 1.3 million people a year and brings inquiry-based science education to classrooms and community events all over Washington State. It’s an amazing accomplishment and one we cannot achieve without generous support from individuals, corporations, and other social organizations. Visit pacificsciencecenter.org to find various ways you can support Pacific Science Center.
1. Where can you buy a souvenir at Pacific Science Center?| A．In Building 1. |
| B．In Building 3. |
| C．At the the Laser Dome. |
| D．At the Denny Way entrance. |
| A．Train Science teachers. |
| B．Distribute science books. |
| C．Inspire scientific research. |
| D．Take science to the classroom. |
| A．To encourage donations. |
| B．To advertise coming events. |
| C．To introduce special exhibits. |
| D．To tell about the Center’s history. |
8 . Certain forms of AI are indeed becoming ubiquitous. For example, algorithms (算法) carry out huge volumes of trading on our financial markets, self-driving cars are appearing on city streets, and our smartphones are translating from one language into another. These systems are sometimes faster and more perceptive than we humans are. But so far that is only true for the specific tasks for which the systems have been designed. That is something that some AI developers are now eager to change.
Some of today’s AI pioneers want to move on from today’s world of “weak” or “narrow” AI, to create “strong” or “full” AI, or what is often called artificial general intelligence (AGI). In some respects, today’s powerful computing machines already make our brains look weak. AGI could, its advocates say, work for us around the clock, and drawing on all available data, could suggest solutions to many problems. DM, a company focused on the development of AGI, has an ambition to “solve intelligence”. “If we’re successful,” their mission statement reads, “we believe this will be one of the most important and widely beneficial scientific advances ever made.”
Since the early days of AI, imagination has outpaced what is possible or even probable. In 1965, an imaginative mathematician called Irving Good predicted the eventual creation of an “ultra-intelligent machine…that can far surpass all the intellectual (智力的) activities of any man, however clever.” Good went on to suggest that “the first ultra-intelligent machine” could be “the last invention that man need ever make.”
Fears about the appearance of bad, powerful, man-made intelligent machines have been reinforced (强化) by many works of fiction — Mary Shelley’s Frankenstein and the Terminator film series, for example. But if AI does eventually prove to be our downfall, it is unlikely to be at the hands of human-shaped forms like these, with recognisably human motivations such as aggression (敌对行为). Instead, I agree with Oxford University philosopher Nick Bostrom, who believes that the heaviest risks from AGI do not come from a decision to turn against mankind but rather from a dogged pursuit of set objectives at the expense of everything else.
The promise and danger of true AGI are great. But all of today’s excited discussion about these possibilities presupposes the fact that we will be able to build these systems. And, having spoken to many of the world’s foremost AI researchers, I believe there is good reason to doubt that we will see AGI any time soon, if ever.
1. What does the underlined word “ubiquitous” in Paragraph I probably mean?| A．Enormous in quantity. | B．Changeable daily. |
| C．Stable in quality. | D．Present everywhere. |
| A．Help to tackle problems. | B．Make brains more active. |
| C．Benefit ambitious people. | D．Set up powerful databases. |
| A．supportive | B．disapproving |
| C．fearful | D．uncertain |
| A．It may be only a dream. |
| B．It will come into being soon. |
| C．It will be controlled by humans. |
| D．It may be more dangerous than ever. |
9 . Baggy has become the first dog in the UK—and potentially the world—to join the fight against air pollution by recording pollutant levels near the ground.
Baggy wears a pollution monitor on her collar so she can take data measurements close to the ground. Her monitor has shown that air pollution levels are higher closer to ground level, which has helped highlight concerns that babies and young kids may be at higher risk of developing lung problems.
Conventional air pollution monitors are normally fixed on lampposts at about nine feet in the air. However, since Baggy stands at about the same height as a child in a pushchair（婴儿车）, she frequently records pollution levels which are much higher than the data gathered by the Environment A gency.
The doggy data research was the idea of Baggy's 13-year-old owner Tom Hunt and his dad Matt. The English youngster noticed that pollution levels are around two-thirds higher close to the ground than they are in the air at the height where they are recorded by the agency. Tom has since reported the shocking findings to the government in an attempt to emphasise that babies are at higher risk of developing asthma（哮喘）.
Matt Hunt said he was "very proud" of his son because “when the boy gets an idea, he keeps his head down and gets on with it, and he really does want to do some good and stop young kids from getting asthma."
“Tom built up a passion for environmental protection at a very early age," Matt added. “He became very interested in gadgets（小装置）. About one year ago, he got this new piece of tech which is like a test tube. One Sunday afternoon, we went out to do some monitoring, and he said, why don't we put it on Baggy's collar and let her monitor the pollution？'So we did it."
Tom said, "Most of the time, Baggy is just like any other dog. But for the rest of the time she is a super dog, and we are all really proud of her."
1. With a monitor on her collar, Baggy can ____________.| A．take pollutant readings | B．record pollutant levels |
| C．process collected data | D．reduce air pollution |
| A．High places are free of air pollution. |
| B．Higher pushchairs are more risky for kids. |
| C．Conventional monitors are more reliable. |
| D．Air is more polluted closer to the ground. |
| A．To warn of a health risk. | B．To find out pollution sources. |
| C．To test his new monitor. | D．To prove Baggy's abilities. |
| A．Modest. | B．Generous. | C．Creative. | D．Outgoing. |
10 . Choose Your One-Day-Tours!
Tour A - Bath &Stonehenge including entrance fees to the ancient Roman bathrooms and Stonehenge -￡37 until 26 March and ￡39 thereafter. Visit the city with over 2,000 years of history and Bath Abbey, the Royal Crescent and the Costume Museum, Stonehenge is one of the world’s most famous prehistoric monuments dating back over 5,000 years.
Tour B - Oxford & Stratford including entrance fees to the University St Mary’s Church Tower and Anne Hathaway’s -￡32 until 12 March and ￡36 thereafter. Oxford: Includes a guided tour of England’s oldest university city and colleges. Look over the “city of dreaming spires(尖顶）” from St Mary‘s Church Tower. Stratford: Includes a guided tour exploring much of the Shakespeare wonder.
Tour C - Windsor Castle &Hampton Court: including entrance fees to Hampton Court Palace -￡34 until 11 March and ￡37 thereafter. Includes a guided tour of Windsor and Hampton Court, Henry VILL’s favorite palace. Free time to visit Windsor Castle(entrance fees not included).With 500 years of history, Hampton Court was once the home of four Kings and one Queen. Now this former royal palace is open to the public as a major tourist attraction. Visit the palace and its various historic gardens, which include the famous maze(迷宫) where it is easy to get lost!
Tour D –Cambridge including entrance fees to the Tower of Saint Mary the Great -￡33 until 18 March and ￡37 thereafter. Includes a guided tour of Cambridge, the famous university town, and the gardens of the 18th century.
1. Which tour will you choose if you want to see England’s oldest university city?| A．Tour A | B．Tour B |
| C．Tour C | D．Tour D |
| A．Windsor Castle & Hampton Court | B．Oxford & Stratford |
| C．Bath & Stonehenge | D．Cambridge |
| A．It used to be the home of royal families | B．It used to be a well-known maze |
| C．It is the oldest palace in Britain | D．It is a world-famous castle |
