How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.
The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.
The toothbrush will be able to teach you to brush right (don’t forget the insides of the teeth!) and make sure you’re brushing long enough. “It’s kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.
The toothbrush will also be able to talk to other applications on your phone, so developers could, for instance, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart but also fun,” Several says.
Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.
The company says the Kolibree will go on sale this summer, for $99 to $199, developing on features. The U.S. is the first target market.
Serval says that one day, it’ll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush. Which is one of the feature of the Kolibree toothbrush?
| A．It can sense how users brush their teeth. |
| B．It can track users’ school performance. |
| C．It can detect users’ fear of seeing a dentist. |
| D．It can help users find their phones. |
What can we learn from Serval’s words in Paragraph 3?
| A．You will find it enjoyable to see a dentist. |
| B．You should see your dentist on a day-to –day basis. |
| C．You can brush with the Kolibree as if guided by a dentist. |
| D．You’d like a dentist to watch you brush your teeth every day. |
Which of the following might make the Kolibree toothbrush fun?
| A．It can be used to update mobile phones. |
| B．It can be used to play mobile phone games |
| C．It can send messages to other users |
| D．It can talk to its developers. |
What can we infer about Serval’s children?
| A．They were unwilling to brush their teeth |
| B．They often failed to clean their toothbrushes. |
| C．They preferred to use a toothbrush with a dry head. |
| D．They liked brushing their teeth after Serval came home. |
What can we learn about the future development of the Kolibree?
| A．The brush handle will be removed. |
| B．A mobile phone will be built into it. |
| C．It will be used to fill holes in teeth |
| D．It will be able to check users’ teeth |
One thing the tour books don’t tell you about London is that 2,000 of its residents are foxes. They ran away from the city about centuries ago after developers and pollution moved in. But now that the environment is cleaner, the foxes have come home, one of the many wild animals that have moved into urban areas around the world.
“The number and variety of wild animals in urban areas is increasing,” says Gomer Jones, president of the National Institute for Urban Wildlife, in Columbia, Maryland. A survey of the wildlife in New York’s Central Park last year tallied the species of mammals, including muskrats, shrews and flying squirrels. A similar survey conducted in the 1890s counted only five species. One of the country’s largest populations of raccoons (浣熊) now lives in Washington D.C., and moose (驼鹿) are regularly seen wandering into Maine towns. Peregrine falcons(游隼) dive from the window ledges of buildings in the largest U.S. cities to prey on (捕食) pigeons.
Several changes have brought wild animals to the cities. Foremost is that air and water quality in many cities has improved as a result of the 1970s pollution-control efforts. Meanwhile, rural areas have been built up, leaving many animals on the edges of suburbs. In addition, urban wildlife refuges (避难处) have been created. The Greater London Council last year spent￡750,000 to buy land and build 10 permanent wildlife refuges in the city. Over 1,000 volunteers have donated money and cleared rubble from derelict lots. One evening last year a fox was seen on Westminster Bridge looking up at Big Ben.
For peregrine falcons, cities are actually safer than rural cliff dwellings (悬崖栖息地). By 1970 the birds had died out east of the Mississippi because the DDT had made their eggs too thin to support life. That year, scientist Tom Cade of Cornell University began raising the birds for release in cities, for cities afforded abundant food.
Cities can attract wild animals without turning them harmful. The trick is to create habitats where they can be self-sufficient but still be seen and appreciated. Such habitats can even be functional. In San Francisco, the local government is testing different kinds of rainwater control basins to see not only which ones retain (保持) the cleanest water but which will attract the most birds.The first paragraph suggests that ________.
| A．environment is crucial（关键的）for wildlife |
| B．tour books are not always a reliable source of information |
| C．London is a city of fox |
| D．foxes are highly adaptable to environment |
Which of the following is NOT a reason that wildlife is returning to the cities?
| A．Food is plentiful in the cities. |
| B．Wildlife is appreciated in the cities. |
| C．Wildlife refuges have been built in the cities |
| D．Air and water quality has improved in the cities |
The underlined word “tallied” in Para. 2 means __________.
| A．distinguished | B．described | C．counted | D．concluded |
It can be inferred from the passage that _________.
| A．Londoners are putting more and more wild animals into their zoos. |
| B．Londoners are happy to see wild animals return to their city |
| C．Londoners are trying to move wild animals back to the countryside |
| D．Londoners have welcomed the wild birds, but found foxes a problem |
What is the passage mainly about?
| A．Wildlife returning to large cities |
| B．Foxes returning to London |
| C．Wild animals living in zoos |
| D．A survey of wildlife in New York |
My father had always been an alert observer of human character. Within seconds of meeting someone, he could sum up their strengths and weaknesses. It was always a challenge to see if any of my boyfriends could pass Dad’s test. None did. Dad was always right—they didn’t pass my test either. After Dad died, I wondered how I’d figure it out on my own.
That’s when Jack arrived on the scene. He was different from any other guy I’d dated. He could sit for hours on the piano bench with my mother, discussing some composers. My brother Rick loudly announced that Jack wasn’t a turkey like the other guys I’d brought home. Jack passed my family’s test. But what about Dad’s?
Then came my mother’s birthday. The day he was supposed to drive, I got a call. “Don’t worry,” he said, “but I’ve been in an accident. I’m fine, but I need you to pick me up.”
When I got there, we rushed to a flower shop for something for Mom. “How about gardenias（栀子花）?” Jack said, pointing at a beautiful white corsage (胸花). The florist put the corsage in a box.
The entire ride, Jack was unusually quiet. “Are you all right?” I asked. “I’ve been doing a lot of thinking,” he said. “I might be moving.” Moving? Then he added, “Moving in with you.” I nearly put the car on the sidewalk. “What?” I asked. “I think we should get married,” he said. He told me he’d planned his proposal in a fancy restaurant, but after the accident, he decided to do it right away. “Yes,” I whispered. We both sat dumbfounded, tears running down our cheeks. I’d never known such a tender moment. If only Dad were here to give his final approval.
“Oh, let’s just go inside.” Jack laughed. My mother opened the door. “Happy Birthday!” we shouted. Jack handed the box to her. She opened it up. Suddenly, her eyes were filled with tears. “Mom, what’s wrong?” I asked. “I’m sorry,” she said, wiping her eyes. “This is only the second gardenia corsage I’ve ever received. I was given one years ago, long before you kids were born.” “From who?” I asked. “Your father,” Mom said. “He gave me one right before we were engaged.” My eyes locked on Jack’s as I blinked away(眨掉) tears. Dad’s test? I knew Jack had passed. According to the text, we know the writer’s father was __________.
| A．interested in observing things around |
| B．good at judging one’s character |
| C．strict with her boyfriend |
| D．fond of challenges |
What is the main idea of Paragraph 2?
| A．Jack got the family’s approval except Dad’s. |
| B．Jack was different from any other boy. |
| C．Jack was getting on well with Mother. |
| D．Jack knew a lot about piano. |
The underlined word “proposal” in Paragraph 5 means __________.
| A．piece of advice | B．wedding ceremony |
| C．celebration of birthday | D．offer of marriage |
On hearing “moving in with you”, the writer felt __________.
| A．pleased | B．worried |
| C．surprised | D．disappointed |
Why did the writer’s mother cry?
| A．The gift was the same as the one her husband gave her. |
| B．She had never received such a beautiful gift. |
| C．Her daughter found her life partner at last. |
| D．The gardenia corsage was too expensive. |
Fahad Azad, an engineer in India, invented a robot named DuctBot．The toy-car sized DuctBot measured 23 centimeters in length, 19 centimeters in width and 9 centimeters in height and weighs just two kilograms．
The robot is designed to snake through dark, narrow air conditioning ducts （管道） and clean them．A pair of LEDs fitted on the robot light up the dirty scenery, so it can be captured （抓拍） by a camera．
In order to control it more easily, Mr. Azad chooses to fix DuctBot on wheels．The robot can clean off lots of dirt, as well as dead pigeons and insects．Keeping indoor air in good quality and monitoring carbon-dioxide levels in buildings with central air conditioning is a challenge．It is important in some places where clean air can mean a difference between life and death, such as hospitals．Dirty air has a bad influence on people's health．
EPSCO, a Dubai-based company which specializes in improving indoor air quality, read about Mr. Azad's invention in a national newspaper after he had won an international robotics competition．EPSCO had cleaning equipment, but it needed someone to get into those ducts to do the dirty, dangerous work．Across India, for example, the task still falls to children．They are small enough to go through those ducts．
In 2005, Mr. Azad who was still at university decided to do something about it．Six years later his own company, Robosoft Systems, has Bluestar, EPSCO and the Indian Navy, some leading air condition makers, as partners．
Mr. Azad and his ten employees are currently exploring robot designs to examine oil tanks or sewage （污水）pipes．Their biggest challenge is to make the robots user-friendly enough．Mr. Azad hopes that the robot could eventually be operated not by engineers but by workers．There will be lots of difficulties they need to overcome in the future．What can we learn about Ductbot?
| A．It is a toy car and popular with children． |
| B．It is designed to move like a snake in the ducts． |
| C．many LEDs are fitted on it to tell its location． |
| D．It is actually a camera to capture dirty scenery． |
The underlined word "it" in Paragraph 2 refers to "____"．
| A．the camera | B．the conditioning duct |
| C．the LED light | D．the dirty scenery |
What can the Ductbot do for us?
| A．Clean off the dirt in the ducts． |
| B．Control the central conditioning． |
| C．Reduce carbon-dioxide in buildings． |
| D．Protect more animals in city． |
According to the text, EPSCO____．
| A．has won an international robotics competition |
| B．hired children to clean the dirty ducts in the past |
| C．is the only partner of Robosoft Systems |
| D．specializes in improving people's health |
What is the main idea of the last paragraph?
| A．Only engineers can operate the Ductbot now． |
| B．New ways have been found to examine oil tanks． |
| C．Azad's difficulties are impossible to overcome． |
| D．Azad's team are working to improve their robot designs． |
An eighteen-year-old high school student from Utah won the top prize in the Intel Science Talent Search in the United States. The winner received a computer and a scholarship for a college education.
More than 1,500students from across the country entered projects in the competition this year. Their research included chemistry, medicine, physics, mathematics, engineering, and computer science-almost every area of science.
Forty students were invited to Washington, D.C. for the final judging. A group of scientists judged them on their research abilities, critical thinking skills and creativity. The judges also questioned the students about scientific problems before deciding on the winners.
The top winner received 100,000 dollars for college. Shannon Babb of American Fork High School studied the water quality of tile Spanish Fork River in Utah for six years. She found that people have a harmful effect on the river through human activity, including agriculture. And she suggested ways to improve the water quality in the future. These include educating the public not to put household chemicals down the drains（下水道）, which lead to the river eventually.
Seventeen-year-old Yi Sun of the Hanker School in San Jose, California, earned the second place. He won a 75,000-dollar scholarship for new discoveries about a mathematical theory known as random walks. His work could help computer scientists and chemists. Yi Sun was born in China.
The third-place winner was also seventeen and born in China. Yuan “Chelsea” Zhang of Montgomery Blair High School in Rockville, Maryland, won a 50,000-dollar scholarship. She researched the molecular genetics（分子遗传学）of heart disease. Her findings could aid the development of new medicines.
The Intel Science Talent Search is the oldest science competition for high school students in the United States. It is 65 years old this year. Past winners have gone on to receive six Nobel prizes and other top honors in science and math.What do we know about the talent search project?
| A．Most of its winners have received Nobel prizes. |
| B．The project includes researches in every area of science. |
| C．Only a small part of the students can attend the final judging. |
| D．Most of the winners come from Asian countries. |
According to the text, .
| A．water quality in Utah will be better than that in the other states |
| B．the river was polluted only by those living near it |
| C．Shannon Babb suggested more than one way to improve the water quality |
| D．household chemicals should be kept in the drains forever |
Which of the following about the girl from Maryland is NOT true?
| A．The scholarship she received was half as many as Shannon Babb. |
| B．Her discovery is of great help to Chinese medicine. |
| C．Her research will contribute to the cure of heart disease. |
| D．She and the second-place winner Yi Sun have something in common. |
What is the text mainly about?
| A．Three winners' contributions to science and math. |
| B．Three Chinese students won the Science Talent Search. |
| C．Great rewards were given to winners in the competition. |
| D．Winners of the Intel Science Talent Search in the US. |
Where are you most likely to find this text?
| A．In a newspaper. | B．In a handbook. | C．In a textbook. | D．In a medical magazine. |
You have probably heard of the Mozart effect. It’s the idea that if children or even babies listen to music composed by Mozart, they will become more intelligent. A quick Internet search reveals plenty of products to assist you in the task. Whatever your age there are CDs and books to help you taste the power of Mozart’s music, but when it comes to scientific evidence that it can make you more clever, the picture is more mixed.
The phrase “the Mozart effect” was made up in 1991, but it was a study described two years later in the journal Nature that sparked real media and public interest about the idea that listening to classical music somehow improves the brain. It is one of those ideas that sound reasonable. Mozart was undoubtedly a genius himself; his music is complex and there is a hope that if we listen to enough of it ,we’ll become more intelligent.
The idea took off, with thousands of parents playing Mozart to their children, and in 1998 Zell Miller, the Governor of the state of Georgia in the US, even asked for money to be set aside in the state budget so that every newborn baby could be sent a CD of classical music. It was not just babies and children who were exposed to Mozart’s music on purpose, even an Italian farmer proudly explained that the cows were played Mozart three times a day to help them to produce better milk.
I’ll leave the debate on the impact on milk yield to farmers, but what about the evidence that listening to Mozart makes people more intelligent? More research was carried out but an analysis of sixteen different studies confirmed that listening to music does lead to a temporary improvement in the ability to handle shapes mentally, but the benefits are short-lived and it doesn’t make us more intelligent.What can we learn from paragraph 1?
| A．Mozart composed many musical pieces for children. |
| B．Children listening to Mozart will be more intelligent. |
| C．There are few products on the Internet about Mozart’s music. |
| D．There is little scientific evidence to support Mozart effect. |
Why did many people believe in the idea of Mozart Effect?
| A．Because a study described it in the journal Nature. |
| B．Because Mozart himself was a genius. |
| C．Because Mozart’s music is enjoyable. |
| D．Because Mozart’s music makes people relaxed. |
The underlined sentence in paragraph3 suggests that .
| A．people were strongly against the idea |
| B．the idea was accepted by many people |
| C．Mozart played an important part in people’s life |
| D．the US government helped promote the idea |
What is the author’s attitude towards the Mozart effect?
| A．Favorable | B．Objective | C．Doubtful | D．Positive |
What would be the best title for the passage?
| A．Listening to Mozart , necessary? | B．What music is beneficial? |
| C．What is the Mozart effect? | D．To be or not to be? |