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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(嫌疑犯) 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.”
69. To find criminals, police usually ______.
A. focus on where crimes take place B. seek help from local people
C. depend on new mathematical tools D. check who are on the crime scene
70. 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. shows changes in criminals’ patterns
D. provides the crime records of a given city
71. 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 more criminals than other mathematicians
D. knows best how to use math to help solve crimes
72. What is the main idea of the text?
A. Criminals live near where crimes occur.
B. Math could help police find criminals.
C. Crime records could be used to fight crime.
D. Computer software works in preventing crimes.
查看习题详情和答案>>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(嫌疑犯) 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.”
69. To find criminals, police usually ______.
A. focus on where crimes take place B. seek help from local people
C. depend on new mathematical tools D. check who are on the crime scene
70. 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. shows changes in criminals’ patterns
D. provides the crime records of a given city
71. 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 more criminals than other mathematicians
D. knows best how to use math to help solve crimes
72. What is the main idea of the text?
A. Criminals live near where crimes occur.
B. Math could help police find criminals.
C. Crime records could be used to fight crime.
D. Computer software works in preventing crimes.
查看习题详情和答案>>单词拼写: 根据首字母或汉语提示写出下列单词(每空0.5分，共计8分)
1. After e__________ was cut off, the lights went out.
2. A man should be ________ （判断）by his deeds, not by his words.
3. I felt highly __________（荣幸）by your trust..
4. Dead and ______ （受伤的）people lay everywhere after the terrible accident.
5. The old left an estate（保险）of two ______（百万）dollars when he died.
6. It is natural for children to have different v_____ from their parents.
7. According to the weather f_______, it’s going to stay cold for the rest of the week.
8.The plane is flying at an _______（海拔）of 25,000 feet.
9. Wish you a pleasant j___________!
10. That old bike is his only means of _________. （交通工具）.
11. How many people were p_______ at the meeting?
12．The _______（东部的）coastline of China is very long
13. His interest in maths _________（逐渐地）increases.
14. He said it would rain, but I __________ （不同意）with him.
15. Let me give you some a______ on how to learn English.
16. Don’t stay o________ since the weather is so cold.
查看习题详情和答案>>对话填空（每小题1分，满分10分）
阅读下面对话，掌握其大意，并根据所给首字母的提示，在标有题号的右边横线上写出一个英语单词的完整、正确形式，使对话通顺。
A：Hello. How are you today？ I h you weren't yourself last week.
B：I'm much b now, Thank you.
A：What was the m ？ Nothing serious, I hope.
B：Oh, no ,I had a bad cold and had to stay in bed for two days.
A：I hope it was the last cold of w and not the first cold of spring. What about your friend, Ann？I heard she was ill, too
B：She was ill, but now she's all right. I think she carried my cold.
A：Everybody seems to have one now ,I guess it's b of the sudden change of weather, One day hot and the next day cold.
B：And very windy, too. That's why I'm w a sweater today. What do you think of it？
A：It certainly looks wonderful. It must have cost a lot. W did you buy it？
B：Oh ,I got it at a sale ,It was quite cheap.
A：Really! Well, Mary, I must say it suits you very well, What a p that I can't get o
for my wife.
B：Why not？ Maybe I can help you find one for your wife some day.
A：Thanks a lot ,I'm really thinking of s her a present on her birthday.
查看习题详情和答案>>单词拼写: 根据首字母或汉语提示写出下列单词(每空0.5分，共计8分)
1. After e__________ was cut off, the lights went out.
2. A man should be ________ （判断）by his deeds, not by his words.
3. I felt highly __________（荣幸）by your trust..
4. Dead and ______ （受伤的）people lay everywhere after the terrible accident.
5. The old left an estate（保险）of two ______（百万）dollars when he died.
6. It is natural for children to have different v_____ from their parents.
7. According to the weather f_______, it’s going to stay cold for the rest of the week.
8.The plane is flying at an _______（海拔）of 25,000 feet.
9. Wish you a pleasant j___________!
10. That old bike is his only means of _________. （交通工具）.
11. How many people were p_______ at the meeting?
12．The _______（东部的）coastline of China is very long
13. His interest in maths _________（逐渐地）increases.
14. He said it would rain, but I __________ （不同意）with him.
15. Let me give you some a______ on how to learn English.
16. Don’t stay o________ since the weather is so cold.