Controlling traffic is a complex and high cost problem in many developed countries. It becomes more difficult and costly with the ever-increasing number of cars on the roads. But scientists and students at the CATT, at the University of Maryland are working to solve this problem. They are using simulation(模拟) technologies to help government and private business control and react to changing traffic conditions.
The online economics magazineForbes.comsays traffic congestion(拥挤) cost Americans $ 124 billion in 2014 and that number could rise to $ 186 billion by 2030.
But scientists at the CATT lab are trying to reduce those costs. They are developing a system that helps traffic managers, planners, emergency workers and businesses plan and react better. Michael Pack is CATT director. He says the system is important to help emergency workers, or first responders. reach an accident area faster.
The CATT Lab collects information from many sources, including roadside devices, GPS (global positioning system) equipment and wireless phones.
About 60 students and 30 software developers observe traffic flow and manage the computer servers at all times. They also work to develop software and applications that can help traffic run smoother and safer, Some of them turn the information gathered into so-called "visualizations". These visual representations help emergency workers better understand what is happening.
The center shares its findings with firefighters, police. Transportation departments and the military. They also share information with universities and transportation company.The technology company Google uses the data for its traffic-related websites. Michael Pack says, the information is then shared with anyone who wants to help traffic run more smoothly.
Mr. Pack says the goal is to help develop an intelligent system of road signals that will communicate with each other and with vehicles on the road.
The second paragraph is written to
| A．attract more people to look throughForbes.com. |
| B．tell readers whatForbes.comsays on its websitrre |
| C．show how much money controlling costs America |
| D．prove it is very expensive for some developed countries to control traffic |
What benefit can emergency workers get from the system developed by the CATT lab?
| A．They can be safer. |
| B．They can reach an accident area faster. |
| C．They can get more advice from people. |
| D．They can share their information with others. |
Which of the following is NOT true about the developers and the students at the CATT?
| A．They observe traffic flow continuously. |
| B．They develop software and applications. |
| C．They control the computer servers occasionally. |
| D．They change the information gathered into visual image. |
In which column of the newspaper can you read this text?
| A．Daily life. | B．Science. |
| C．Education. | D．Exploration |
For some time past,it has been widely accepted that babies—and other creatures—learn to do things because certain acts lead to “rewards(报酬)”,and there is no reason to doubt that this is true. But it used also to be widely believed that effective rewards, at least in the early time, had to be directly connected to such basic physiological(生理的) “drives” as thirst or hunger. In other words, a baby would learn if he got food or drink or some sort of physical comfort, not otherwise.
It is now clear that this is not so. Babies will learn to behave in ways that produce results in the world with no reward except success in sight.
Papousek began his studies by using milk in the normal way to “reward” the babies and to teach them to carry out some simple movements, such as turning the head to one side or the other.Then he noticed that a baby who had had enough to drink would refuse the milk but would still go on making the learned response(回答) with clear signs of pleasure. So he began to study the children's responses in situations where no milk was provided. He quickly found that children as young as four months would learn to turn their heads to right or left if the movement “turned on” some lights—and indeed that they were able to learn some more turns to bring about(产生) this result,for example,two left or two right,or even to make as many as three turns to one side.
Papousek's light experiment was placed directly in front of the babies and he made the interesting observation that sometimes they would not turn back to watch the light closely although they would “smile and speak” when the light was on.Papousek concluded that it was not the sight of the lights which pleased them.It was the success they were achieving in solving the problem,in mastering the skill,and then there is a basic human nature to make sense of the world and bring it under control.According to the writer,babies learn to do things which _______.
| A．will satisfy their surprise | B．will meet their physical needs |
| C．are directly connected to pleasure | D．will bring them a feeling of success |
Papousek noticed in his studies that a baby _______.
| A．would make learned responses when it saw the milk |
| B．would continue the simple movements without being given milk |
| C．would turn its head to right or left when it had enough to drink |
| D．would carry out learned movements when it had enough to drink |
In Papousek's experiment babies make learned movements of the head in order to _______.
| A．be praised | B．please their parents |
| C．be rewarded with milk | D．have the lights turned on |
The babies would “smile and speak” at the lights because _______.
| A．they succeeded in “turning on” the lights |
| B．the sight of lights was interesting |
| C．they need not turn back to watch the lights |
| D．the lights were directly connected to some basic “drives” |
Perhaps you will visit New York one day. You might be a student there. Here is some advice.
Get a good map of the city. It will also have subway and bus maps. Remember the directions—uptown, downtown, east and west. Feel the excitement of New York .Have fun!
NEW YORK CONVENTION AND VISITORS BUREAU
Address:90 East 42nd Street,N.Y.100017
Telephone:6871300
TIMES SQUARE INFORMATION CENTER
Address:43rd Street between Seventh Avenue and Broadway
Telephone:5938983
TRAVELERS' AID SOCIETY
Address:204 ast 39th Street,N.Y.10016(central office)
Telephone:6790200
TRAVEL INFORMATION:NEW YORK SUBWAYS AND BUSES
Telephone:3301234
OTHER TELEPHONE NUMBERS
The weather:WE 61212.The time:ME 71212
Emergency (Police,Fire,or Ambulance):911 or “0” for operator
A doctor:8971000
USEFUL BOOK
Seeing New York; The official MTA Travel Guide,published by the Metropolitan Transportation Authority.What would be the best title for the passage?
| A．Introductions and directions |
| B．This is New York |
| C．Information and advice |
| D．Have fun here |
If you lose your passport in New York, you may probably get help from _______.
| A．CONVENTION AND VISITORS BUREAU |
| B．TIMES SQUARE INFORMATION CENTER |
| C．USEFUL BOOK |
| D．TRAVEL INFORMATION |
If a visitor wanted to take a train, he could get some help by dialing the number “_______”.
| A．8971000 | B．3301234 | C．WE 61212 | D．911 or “0” |
It will be hot—hot enough that most locals will have cleared town for cooler places. But because athletes competing at the 2004 Olympics have no choice but to stay in the hot weather, many plan to turn to science to stay cool.
Some will put their hands in ice water just before competing and nearly all will be wearing fabrics(织物) designed with hot weather in mind.
“Normally we warm up before exercise,”said Gordon Sleivert, director of sports science and medicine at the Canadian Sport Center in Victoria, British Columbia.“But in this case we're taking the warm out of warm up. It's like pre-cooling.”
Experts are predicting(预测) the average high this August in Athens will be 90 degrees Fahrenheit, with temperatures often reaching above 100(the average temperature in Sydney for the 2000 summer games was 64).
Although some events, such as the marathon, will start early(1 a.m.) to avoid hot weather, other competitors will be pushing their limits during high temperatures. Drinking lots of water will help athletes keep cool, but humidity(湿度) remains a problem. The body's ability to cool down is weakened by damp air since sweat drips off the skin rather than evaporates(蒸发),resulting in dehydration(脱水) without the cooling.
“Getting hot is a real problem because when our brains heats up, the brain waves are more like when you're really sleepy. Everything feels harder,” said Sleivert. The passage mainly tells us that _______.
| A．why it is very hot in Athens |
| B．the hot weather is a big problem for Olympic athletes |
| C．how important science is to every athlete |
| D．the Olympics will be put off because of the hot weather |
The underlined sentence “other competitors will be pushing their limits during high temperatures”in the fifth paragraph means _______.
| A．Olympic athletes will put off their competition time |
| B．some events in the Olympics will have to be put forward |
| C．competitors can't reach their limits in the hot weather |
| D．competitors will have to try their best to compete under any condition |
The following things will be likely to happen in the hot weather EXCEPT _______.
| A．dehydration |
| B．being sleepy |
| C．that the blood in the body can become less and less |
| D．that the body's ability to cool down is weakened |
British men are couch potatoes. They spend nearly half their freetime watching TV. They watch more TV than women, do less housework, less charity work and less childcare—but spend more time shopping, a poll(民意测验) suggests. Analysts(分析家) from Eurostat, the EU's statistical office, interviewed working men and women in 10 countries.
Britain, where men devoted 49% of their freetime to the box, came a narrow second to the Hungarians with 51%.German and Norwegian men watched the least TV—just over one third of their spare time.
The analysts took the average of the figures for the whole year including holidays and weekends. They broke down the “average day” into five categories(类)—free-time, sleep, meals and personal care, travel, domestic chores(家务事) and work or study. It shows that British men have four hours and 41 minutes free time each day—20 minutes more than women. But women spend nearly double the amount of time on domestic chores than men. Almost three-and-a-half hours of a woman's day is taken up with domestic work, compared to less than two hours for men.
Food preparation makes up the bulk(量) of the chores, with leaning and shopping the next most time-consuming. They further broke down the free-time and domestic categories to show that men spend 137 minutes each day in front of the TV, compared to women's 114 minutes.
Women spend slightly more time socializing resting and reading than men, but slightly less time on hobbies, sport and exercise. Universally unpopular with both sexes is culture—accounting for just 2% of both men and women's leisure time.According to the passage, couch potatoes refer to _______.
| A．a kind of potatoes produced in Britain |
| B．people spending much time sitting and watching television |
| C．a kind of food offered by the English people |
| D．people who like doing housework instead of watching TV |
According to the passage, which of the following may NOT be included in the ten countries?
| A．Germany. | B．Norway. | C．Hungary. | D．Russia. |
What both men and women don't like in their spare time is _______.
| A．taking part in cultural activities | B．shopping |
| C．enjoying their hobbies | D．doing domestic chores |
What would be the best title for the passage?
| A．Domestic Chores—Only Women's Right |
| B．British Men—Couch Potatoes |
| C．What the Research Means |
| D．Men and Women in Different Situations |
Parents often believe that they have a good relationship with their teenagers. But last summer, Joanna and Henry noticed a change in their older son, suddenly he seemed to be talking far more to his friends than to his parents. “The door to his room is always shut,” Joanna noted.
Tina and Mark noticed similar changes in their 14-year-old daughter. “She used to cuddle up(蜷伏) with me on the soft and talk,” said Mark.“Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a young lady. The problem is figuring out which time is which.”
Before age 11, children like to tell their parents what's on their minds.“In fact, parents are first on the list,” said Michael Riera, author of Uncommon Sense for Parents with Teenagers.“This completely changes during the teen years.” Riera explained.“They talk to their friends first, then maybe their teachers, and their parents last.”
Parents who know what's going on in their teenagers' lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break, for children also need freedom, though young.Another thing parents should remember is that to be friend, not a manager, with their children is a better way to know them.“The door to his room is always shut” suggests that the son_______.
| A．is always busy with his studies |
| B．doesn't want to be disturbed |
| C．keeps himself away from his parents |
| D．begins to dislike his parents |
What troubles Tina and Mark most is that _______.
| A．their daughter isn't as lovely as before |
| B．they can't read their daughter's mind exactly |
| C．they don't know what to say to their daughter |
| D．their daughter talks with them only when she needs help |
Which of the following best explains “the wall of silence” in the last paragraph?
| A．Teenagers talk a lot with their friends. |
| B．Teenagers do not want to understand their parents. |
| C．Teenagers do not talk much with their parents. |
| D．Teenagers talk little about their own lives. |
What can be learned from the passage?
| A．Parents are unhappy with their growing children. |
| B．Parents have suitable ways to talk with their teenagers. |
| C．Parents should be patient with their silent teenagers. |
| D．Parents should try to understand their teenagers. |