TheUSgovernmenthasstartedawebs-优题课

When you think about math, you probably don’t think about breaking the law, solving mysteries or finding criminals. But a mathematician in Maryland does, and he has come up with mathematical tools to help police find criminals.
People who solve crimes look for patterns that might reveal (揭示) the identity of the criminal. It’s long been believed, for example, that criminals will break the law closer to where they live, simply because it’s easier to get around in their own neighborhood. If police see a pattern of robberies in a certain area, they may look for a suspect who lives near the crime scenes. So, the farther away from the area a crime takes place, the less likely it is that the same criminal did it.
But Mike O’Leary, a mathematician at Towson University in Maryland, says that this kind of approach may be too simple. He says that police may get better clues to the location of a criminal’s home base by combining these patterns with a city’s layout (布局) and historical crime records.
The records of past crimes contain geographical information and can reveal easy targets — that is, the kind of stores that might be less difficult to rob. Because these stores are along roads, the locations of past crimes contain information about where major streets and intersections are. O’Leary is writing a new computer program that will quickly provide this kind of information for a given city. His program also includes information about the people who live in the city, and information about how a criminal’s patterns change with age. It’s been shown, for example, that the younger the criminal, the closer to home the crime.
Other computer programmers have worked on similar software, but O’Leary’s uses more math. The mathematician plans to make his computer program available, free of charge, to police departments around the country.
The program is just one way to use math to fight crime. O’Leary says that criminology — the study of crime and criminals — contains a lot of good math problems. “I feel like I’m in a gold mine and I’m the only one who knows what gold looks like,” he says. “It’s a lot of fun.”
61. To find criminals, police usually _________.
A. check who are on the crime scene
B. seek help from local people
C. depend on new mathematical tools
D. focus on where crimes take place
62. O’Leary is writing a computer program that _________.
A. uses math to increase the speed of calculation
B. tells the identity of a criminal in a certain area
C. provides the crime records of a given city
D. shows changes in criminals’ patterns
63. By “I’m the only one who knows what gold looks like”, O’Leary means that he _________.
A. is better at finding gold than others
B. is the only one who uses math to make money
C. knows best how to use math to help solve crimes
D. has more knowledge of gold than other mathematicians
64. What do you know about O’Leary according to the passage?
A. He is a man full of impractical imagination.
B. He is a man full of self-confidence.
C. He is a man who is talkative but lazy.
D. He is a man who doesn’t like mathematics.
65. What is the main idea of the text?
A. Math could help police find criminals.
B. Criminals live near where crimes occur.
C. Crime records could be used to fight crime.
D. Computer software works in preventing crimes.

Beijing: The highly anticipated Beijing-Shanghai high-speed railway will begin operation next year, and is expected to cut travel time to four hours, railway officials said.
The high-speed railway between China's two most important metropolises was scheduled to open in 2012 but will now open one year ahead of time, said Zheng Jian, chief planner with the Ministry of Railways.
Wang Zhiguo, vice-minister of railways, said that it would be a four-hour journey from Beijing to Shanghai, and only three hours from Beijing to Nanjing, capital of East China's Jiangsu province.
At present, it takes about 10 hours to travel from Beijing to Shanghai and Nanjing by train. A new-generation bullet train that will travel up to 380 kilometers per hour (kph) is now under development for the high-speed rail link.
It will be rigorously tested this year, and engineers want the train to run at a top speed of 420 kph to guarantee a safe operational speed of 380 kph, Huang Qiang, chief researcher with the China Academy of Railway Sciences told the Beijing News.
Vice-Minister Wang Zhiguo said it was expected that high-speed trains would one day take passengers from Beijing to most capital cities within eight hours, except for Haikou, Urumqi, Lhasa and Taipei.
It is expected that an 110,000-km railway network will be completed by 2012, including 13,000 km of high-speed rail, he said.
China already has 6,552 km of rail track in operation --- the longest amount of high-speed rail track in the world.
At present, at least 10,000 km of high-speed rail line is under construction in China. About 3,676 km of new track for running trains at speeds up to 350 kph have already been laid and put into operation. Another 2,876 km of old tracks have been upgraded to run trains of 200 to 250 kph. .
Ultimately, China plans to construct a 120,000-km railway network, including 50,000-km of high-speed rail track, by 2020.
The Ministry of Railways wants to export China's high-speed railway technology to North America, Europe and Latin America.
Wang said, “State-owned Chinese companies are already building high-speed lines in Turkey and Venezuela. Many countries, including the United States, Russia, Brazil and Saudi Arabia, have also expressed interest.”
56.When will the Beijing-Shanghai high-speed railway come into use?
A. In 2012. B. In 2013. C. In 2011. D. In 2010
57. How much time will a passenger save by train from Beijing to Shanghai after the high-speed railway is open?
A. 4 hours. B. 6 hours. C. 10 hours. D. 3 hours.
58. Which of the following countries owns the longest railway in the world ?
A. China. B. America. C. Canada. D. Russia.
59. Which city, in the opinion of vice-minister Wang Zhiguo, can passengers from Beijing reach in high-speed trains within 8 hours ?
A. Haikou. B. Urumqi. C. Lhasa . D. Changsha.
60. What can we learn from the last two paragraphs?
A. The Ministry of Railways wants to increase GDP by exporting railway technology.
B. China’s railway technology is superior to that of many other countries.
C. Countries in North America have already imported the railway technology of China.
D. The United States also wants to build high-speed railways in Turkey and Venezuela.

Festival activities program
TIME AND PLACE
October 24~30: 9:00 a.m. ~4:00p.m
Oct.25~29: 12:00 p.m~9:00 p.m.
At Kerry Centre Hotel
Classroom area
1) English Taster Lesson
2) Food health-keeping method presentation Computer area
3) E-Photography and Techno Music
4) Education Software Demonstration
Internet Training area
SINA and Capital on- Line will provide Internet training for the public. The focus(焦点) will be on browsing the Internet; how to find useful information on the web and how to design an elementary Web page
Foyer activity area
5) The students from Beijing TV University for the Aged will provide calligraphy (handwriting demonstration)
6) Children activities Lectures
21st Century, the educational weekly of China Daily, will invite experts from English- speaking countries to hold lectures from 18:30 to 20:30 on Oct. 27 to 29 and in the daytime on Oct. 30.
60. A 70 -year- old teacher wants to see how to use writing brush well. He should go to ________.
A. Classroom area B. Computer area
C. Internet Training area D. Foyer Activity area
61. A person who is interested in internet can go to ____________.
A. Computer area at 9 .m. Oct. 30
B. Internet Training area at 11 a. m. Oct. 24
C. Classroom area at 8:00 p. M. Oct. 26
D. Lectures at 9:00 p. m. Oct. 29
62. The students of English Department have a chance to learn English at __________.
A. 9:00~9:45 a .m. Oct. 27 B. 15:00~15:45 Oct. 30
C. 17:15~18:00 Oct. 28 D. 12:00~12:45 Oct. 25
63. The underlined word "browsing" in the passage probably means ____________.
A. seeing everywhere B. going here and there
C. staring everywhere D. reading here and there in book, etc

I went over to my grandmother’s house today and she didn’t have time for me. You see, the lady’s husband downstairs died and my Grandmother wanted to make some cookies for her. My grandmother did not analyze (分析) how the lady treated her, or if the lady needed any cookies, or even if the lady would like the cookies. She didn’t think how much the lady has done for her. She simply began baking.
My Grandmother turned 94 last week and this I believe is her secret to life. My grandmother is generous (慷慨) and hard-working in a way that is rare for our time. She lives by a simple belief: if someone needs your help, you help. Never mind all the analyzing and thinking whether the person deserves or appreciates the help. My grandmother doesn’t sit around thinking about who might be making use of her: she simply does what is needed.
At 94, she is busy in life. She is making a blanket for a new great grandchild, and worries that I don’t have enough kitchen towels for my home. She always brings soup to a sick neighbor, and teaches the new wife of her cousin (who is 88) how to cook Italian food.
My grandmother had every right to give up, but she didn’t — and amazingly life did bring her good things, like a husband with twinkling blue eyes who was much ahead of his time and believed that men should do an equal amount of cooking and cleaning in the home, three beautiful children (my father and two aunts), 22 grandchildren, and five great grandchildren. My grandmother is not afraid to give someone she barely knows a bowl of soup. She never keeps herself out of the world.
72. The reason why my grandmother made cookies for the lady downstairs is that ________.
A. she thought the lady was too busy
B. she would make them as thanks to her
C. she thought she should do something for the lady at the special time
D. they had had an agreement before
73. In the writer’s opinion, ________.
A. my grandmother has a secret way of living
B. my grandmother does everything on careful consideration
C. few people are as generous as my grandmother now
D. my grandmother will get something in return
74. Which of the following is NOT true according to the passage?
A. My grandmother cares for her children even some strangers.
B. My grandfather does not treat women in an unfair way.
C. This is a family in which there are nearly 30 people now.
D. My grandmother never keeps everything for herself.
75. We may infer from the text that the writer ________.
A. thinks his grandmother is living a tired life
B. thinks his grandmother is doing what she should do
C. thinks his grandmother should not be so kind
D. is proud of his grandmother

Tea drinking was common in China for nearly one thousand years before anyone in Europe had ever heard about tea．People in Britain were much slower in finding out what tea was like, mainly because tea was very expensive. It could not be bought in shops and even those people who could afford to have it sent from Holland did so only because it was a fashionable curiosity. Some of them were not sure how to use it. They thought it was a vegetable and tried cooking the leaves. Then they served them mixed with butter and salt. They soon discovered their mistake but many people used to spread the used tea leaves on bread and give them to their children as sandwiches.
Tea remained scarce and very expensive in England until the ships of the East Indian Company began to bring it direct from China early in the seventeenth century. During the next few years so much tea came into the country that the price fell and many people could afford to buy it.
At the same time people on the Continent were becoming more and more fond of tea．Until then tea had been drunk without milk in it, but one day a famous French lady named Madame de Sevigne decided to see what tea tasted like when milk was added．She found it so pleasant that she would never again drink it without milk. Because she was such a great lady her friends thought they must copy everything she did, so they also drank their tea with milk in it. Slowly this habit spread until it reached England and today only very few British drink tea without milk.
At first, tea was usually drunk after dinner in the evening. No one ever thought of drinking tea in the afternoon until a duchess (公爵夫人) found that a cup of tea and a piece of cake at three or four o’clock stopped her getting “a sinking feeling” as she called it. She invited her friends to have this new meal with her and so, tea-time was born.
67．Which of the following is true of the introduction of tea into Britain?
A. The British got expensive tea from India.
B. Tea reached Britain from Holland.
C．The British were the first people in Europe who drank tea.
D．It was not until the 17th century that the British had tea.
68．Tea became a popular drink in Britain_____________.
A．in eighteenth century B．in sixteenth century
C．in seventeenth centuryD．in the late seventeenth century
69．People in Europe began to drink tea with milk because_____________.
A．it tasted like milk
B．it tasted more pleasant
C．it became a popular drink
D．Madame de Sevigne was such a lady with great social influence that people tried to copy the way she drank tea
70．We may infer from the passage that the habit of drinking tea in Britain was mostly due to the influence of　________.
A．a famous French lady B．the ancient Chinese
C．the upper social class D．people in Holland
71．What does the passage mainly talk about?
A．The history of tea drinking in BritainB．How tea became a popular drink in Britain
C．How the British got the habit of drinking tea D．How tea-time was born

A．healthy	B．of high nutrition
C．yummy	D．of low quality