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.”
1.
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
2.
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
3.
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
4.
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.
科目：高中英语 来源： 题型：阅读理解
完形填空 （共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑
There was a stranger at my doorstep this morning. I was a little __36__ at first because my parents warned me not to talk to strangers, __37__ he seemed to be a fellow student in my college so I began to calm down soon after.
__38__ in old but neatly pressed clothes, the tall boy began explaining his __39__. He told me about his school fees and said that the time __40__ his exam was approaching. Though his grades were excellent, he would not be __41__ to take his exams if he failed to __42__ the money for all of the tuition fees. He was studying Computer Applications in my city. __43__ I had friends studying the same course in my college, __44__ meant that I could ask them all about him.
The boy was still $ 2,500 short of the $ 30,000 that his tuition __45__. He was having a hard time, and he had a bad family situation __46__. I didn’t have much money, so I gave him an __47__ foreign book on computer languages. I thought that he __48__ could not afford such a textbook. I also remembered that I had won $ 500 in a contest. I __49__ the entire $ 500 to my newly made friend and __50__ him good luck with his exams.
When you are in college, __51__ is very important __52__ to buy new textbooks or to hang out with friends. When I saw this fellow, I was __53__ of my other friends, many of whom were excellent, but were __54__ to pay for their education. This replaced all the hesitation and __55__ in my mind with generosity.
Since then, I have never wasted even a single coin on anything that I don’t need.
36．A．amused B．interested C．scared D．satisfied
37．A．but B．therefore C．besides D．now that k+s-5#u
38．A．Dressing B．Dressed C．To dress D．To be dressed
39．A．question B．study C．aim D．problem
40．A．of B．in C．for D．to
41．A．suggested B．allowed C．asked D．required
42．A．catch hold of B．come up with C．make up for D．take possession of
43．A．Fortunately B．Simply C．Sometimes D．Quickly
44．A．where B．what C．that D．which
45．A．used B．needed C．cost D．took
46．A．as usual B．as well C．as yet D．as a whole
47．A．informal B．ordinary C．extra D．expensive
48．A．surely B．finally C．probably D．regularly
49．A．handed in B．handed over C．handed down D．handed out
50．A．wished B．hoped C．wanted D．told
51．A．friendship B．luck C．money D．health
52．A．whether B．how C．if D while
53．A．charged B．accused C．warned D．reminded
54．A．struggling B．studying C．willing D．unwilling k+s-5#u
55．A．excitement B．doubt C．belief D．faith
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
When you are little，the whole world feels like a big playground.I was living in Conyers，Georgia the summer it all happened.I was a second grader，but my best friend Stephanie was only in the first grade.Both of our parents were at work and most of the time they let us go our own way.
It was a hot afternoon and we decided to have an adventure in Stephanie's basement.As I opened the basement door，before us lay the biggest room，full of amazing things like guns，dolls，and old clothes.I ran downstairs，and spotted a red steel can.It was paint.I looked beyond it and there lay even more paint in bright colors like purple，orange，blue and green.
“Stephanie，I just found us a project for the day.Get some paintbrushes.We are fixing to paint.”She screamed with excitement as I told her of my secret plans and immediately we got to work.We gathered all the brushes we could find and moved all of our materials to my yard.There on the road in front of my house，we painted big stripes(条纹)of colors across the pavement(人行道)．Stripe by stripe，our colors turned into a beautiful rainbow.It was fantastic!
The sun was starting to sink.I saw a car in the distance and jumped up as I recognized the car.It was my mother.I couldn't wait to show her my masterpiece.The car pulled slowly into the driveway and from the look on my mother's face，I could tell that I was in deep trouble.
My mother shut the car door and walked towards me.Her eyes glaring，she shouted，“What in the world were you thinking？I understood when you made castles out of leaves，and climbed the neighbors' trees，but this！Come inside right now！”I stood there glaring back at her for a minute，angry because she had insulted(侮辱)my art.
“Now go clean it up！”Mother and I began cleaning the road.Tears ran down my cheeks as I saw my beautiful rainbow turn into black cement.
Though years have now passed，I still wonder where my rainbow has gone.I wonder if，maybe when I get older，I can find my rainbow and never have to brush it away.I guess we all need some sort of rainbow to brighten our lives from time to time and to keep our hopes and dreams colorful.
56．What did the writer want to do when his mother came home?
A．To introduce Stephanie to her.
B．To prevent her from seeing his painting.
C．To put the materials back in the yard.
D．To show his artwork to her.
57．In his mother's eyes，the writer________.
A．was a born artist B．always caused trouble
C．was a problem solver D．worked very hard
58．The underlined word“rainbow”in the last paragraph refers to______.
A．the rainbow in the sky
B．the stripes on the pavement
C．something imaginative and fun
D．important lessons learned in childhood
59．It can be learned from the passage that parents should______.
A．encourage children to paint
B．value friendship among children
C．discover the hidden talent in children
D．protect rather than destroy children's dreams
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
Today's teens have a knowledge of the Internet that often surpasses that of their parents. Because so many teens are Internet survey, it is important that they also have an understanding of the dangers that exist online and how to deal with them. Watch teens share their own“RealLife Stories” about issues affecting them on the Internet such as cyberbullying(网络欺凌), online enticement, and giving out too much personal information.
| NSTeens—Terrible Text |
| Some teens say and do terrible things to each other online because they don't see the direct effects of their actions. So what should you do if you're cyberbullied? Watch the NSTeens in their latest video, “Terrible Text”， about a young girl who is troubled when a cyberbully sends mean text messages to her cellphone at all hours of the day and night. Visit NSTeens. org. |
| NetSmartz411 |
| NetSmartz411 is a parent and guardian's premier online resource for learning about the Internet safety，computers, and the Web. Search our knowledge base for answers to all of your questions about the online world! If you can't find what you're looking for, use the“Ask the Experts”tab to send us a question. Your question will be answered by professionals who know a lot about the Internet safety—the reallife analysts at the National Center for Missing & Exploited Children. We handle daily reports about the online exploitation of children；and we'll show you the steps you can take to keep the children and teens in your life safer online. Visit NetSmartz411. org. |
| CyberTipline Report |
| The CyberTipline is the place to report any incident of the Internet exploitation. If you find yourself in a situation where you need help，visit www.cybertipline.com and make a report. If you fear that you are in immediate danger，contact your local law enforcement (执法部门)． |
| RealLife Stories |
| Watch real life stories told by teens who have been victims of the Internet exploitation. RealLife Stories |
| NetSmartzKids |
| Are you concerned about your younger siblings'(兄弟姐妹的) safety online? Visit www.NetSmartzKids.org with them to help them learn how to avoid the dangers that exist on the Internet. |
56.The ad. is intended for________.
A. kids loving to play games online
B. only victims of the Internet use
C. kids and their parents who want to learn about the safety online
D. preschool students who know little about the Internet
57．If you visit the website，you can________.
A. share your friends'“ RealLife Stories” about issues affecting them on the Internet
B. have an understanding of the dangers that exist online and how to deal with them
C. say and do terrible things to each other online
D. ask for help when you have difficulty with your study
58．If you visit www.cybertipline.com，you can ________.
A. contact your local law enforcement
B. search our knowledge base for answers to all of your questions about the online world
C. report any incident of the Internet use
D. help your siblings learn how to avoid the dangers that exist on the Internet
59．Which of the following stories you can share on the Real Life Stories?
A. A teen was murdered by the man she met in a chat room.
B. Problems of losing weight.
C. Left home alone.
D. Hurt by secondhand smoke in the Internet cafe.
查看答案和解析>>
科目：高中英语 来源：2011届安徽省百校论坛高三第一次联合考试英语卷 题型：完型填空
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
"A parcel arrived for you today," my father told me, as we were driving home from work．"It's quite big．" "Oh, really?" I wondered out loud．"Have you 36 anything? Maybe from Amazon or eBay or something…?" my father continued．"No, Dad．I'm 37 only one thing, but that should arrive in a（n） 38 ．"
On Sunday, I will participate in a（n） 39 activity with some friends,' and．I had asked Bluebell if she could send me some of her homemade smile cards to 40 on the day．Since smile cards would have fit into an envelope,'! couldn't imagine what else could be in the 41 I became increasingly 42 as we continued to drive home．As soon as we arrived, I 43 to open the package．It had a neat, hand-written label （标签）on it．"There might be something easy to 44 inside," my father said, as he handed me some scissors．"Be careful when you open it．"
The package was filled with all sorts of kindness 45 I First, some beautiful colorful posters with kindness ideas and 46 fell onto the floor．There were also loads of wrist bands （护腕）, which I will 47 at our kindness activity． 48 , there were three envelopes in the package——two of them had the most cleanly and neatly 49 smile cards, and the third had a wonderful card inside, which 50 , "Thank you very much for your kindness．．．loads of love, Bluebell．"
"This is really 51 ," my father said
．My mother and sister enjoyed the package as well．Bluebell put ．the biggest 52 on all of our faces! When I had asked her for some of her homemade smile cards to 53 some kindness during our activity, I never expected to 54 such a wonderful package filled with all sorts of kindness and inspiration!
You have 55 made my day．Bluebell!
| 【小题1】 |
|
| 【小题2】 |
|
．poster B．parcel' C．envelope D．e-mail| 【小题4】 |
|
| 【小题5】 |
|
| 【小题6】 |
|
| 【小题7】 |
|
| 【小题8】 |
|
| 【小题9】 |
|
| 【小题10】 |
|
| 【小题11】 |
|
| 【小题12】 |
|
| 【小题13】 |
|
| 【小题14】 |
|
| 【小题15】 |
|
| 【小题16】 |
|
| 【小题17】 |
|
| 【小题18】 |
|
| 【小题19】 |
|
| 【小题20】 |
|
查看答案和解析>>
科目：高中英语 来源：2012-2013学年广东省珠海市高一上学期期末质检英语试卷（带解析） 题型：完型填空
The first day of university our professor introduced himself and challenged us to get to know someone we didn’t already know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a 11 ,little old lady beaming up at me with a smile that 12 her entire being.
She said, “Hi, handsome. My name is Rose. I’m eighty-seven years old. Can I give you a hug?” I laughed and enthusiastically 13 , “Of course you may!” and she gave me a giant 14 . “Why are you in college at such a young, innocent age?” I asked.
She 15 replied, “I’m here to meet a rich husband, get married, and have a couple of kids…”
“No seriously,” I asked. I was 16 what may have motivated her to be taking on this 17 at her age.
“I always dreamed of having a 18 and now I’m getting one!” she told me.
Over the course of the year, Rose became a campus icon and she 19 made friends wherever she went. She loved to dress up and she enjoyed the attention bestowed upon her from the other 20 . She was living it up.
At the end of the semester we invited Rose to speak at our football banquet. I’ll never forget what she taught us. “We do not stop playing because we are old; we grow 21 because we stop playing.
There are only four 22 to staying young, being happy and achieving success. You have to laugh and find humor every day. You’ve got to have a dream. When you lose your 23 ,you die.
Anybody can grow older. That doesn’t take any talent or 24 . The idea is to grow up by always finding opportunity in 25 . Have no regrets.”
| 【小题1】 |
|
| 【小题2】 |
|
| 【小题3】 |
|
| 【小题4】 |
|
| 【小题5】 |
|
| 【小题6】 |
|
| 【小题7】 |
|
| 【小题8】 |
|
| 【小题9】 |
|
| 【小题10】 |
|
| 【小题11】 |
|
| 【小题12】 |
|
| 【小题13】 |
|
| 【小题14】 |
|
| 【小题15】 |
|
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
ems