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 hel 题目和参考答案——青夏教育精英家教网—

精英家教网 > 高中英语 > 题目详情

8．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 usuallyD．
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 thatC．
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 heC．
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？B
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
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．

分析本文是一篇科教类阅读，主要介绍了Maryland的一位数学家利用数学知识来帮助警方寻找犯罪分子．

解答 61-65 DCCBA
61题答案：D考查细节推理，根据原文第二段的So，the farther away from the area a crime takes place，the less likely it is that the same criminal did it．因此离犯罪发生地越远，同一个犯罪分子犯罪的可能性就越小．可知警方寻找犯罪分子的常用做法是"关注犯罪的事发地点"，故本题答案为D选项．
62题答案：C考查细节推理，根据原文第四段The records of past crimes contain geographical information and can reveal easy targets及O'Leary is writing a new computer program that will quickly provide this kind of information for a given city．可知本题答案为C选项．
63题答案：C考查细节推理，O'Leary将利用数学知识来研究犯罪学比喻自己在金矿中寻找黄金，而且自己最知道"黄金"是什么样；这里的"寻找黄金"指的是"解决犯罪问题"；故本题答案为C选项．
64题答案：B考查细节推理，根据文章最后一句"I'm the only one who knows what gold looks like"可知O'Leary是一个很自信的人，故本题答案为B选项．
65题答案：A考查主旨大意，文章主要讲的是数学知识可以用来帮助警方寻找犯罪分子；故本题答案为A选项．

点评本文是一篇科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．

练习册系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：高中英语 来源： 题型：填空题

18．You should tell your fiiend that you are concernedabout him．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

19．A new research has uncovered that culture is a determining factor when interpreting facial emotions（情感）．The study reveals that in cultures where emotional control is the standard，such as Japan，focus is placed on the eyes to interpret emotions．Whereas in cultures where emotion is openly expressed，such as the United States，the focus is on the mouth to interpret emotion．
"These findings go against the popular theory that the facial expressions of basic emotions can be universally recognized，"said University of Alberta researcher Dr．Takahiko Masuda．"A person's culture plays a very strong role in determining how they will read emotions and needs to be considered when interpreting facial expression．"
These cultural differences are even noticeable in computer emoticons（情感符号），which are used to convey a writer's emotions over email and text messaging．The Japanese emoticons for happiness and sadness vary in terms of how the eyes are drawn，while American emoticons vary with the direction of the mouth．In the United States the emoticons：） and：-） show a happy face，whereas the emoticons：（or：-（ show a sad face．However，Japanese tend to use the symbol （‘‘） to indicate a happy face，and （；_；）to indicate a sad face．
"We think it is quite interesting and appropriate that a culture tends to mask its emotions．The Japanese would focus on a person's eyes when determining emotion，as eyes tend to be quite subtle（微妙的），"said Masuda．"In the United States，where open emotion is quite common，it makes sense to focus on the mouth，which is the most expressive feature on a person's face．"

51．The text mainly tells us thatB．
A．cultural differences are expressed in emotions
B．culture is the key to interpreting facial emotions
C．different emoticons are preferred in different cultures
D．people from different cultures express emotions differently
52．Which emoticon is used by Americans to show a happy face？C
A．（；_；） B．：-（      C．：-）    D．（‘‘）
53．If a Japanese wants to detect whether a smile is true or false，he will probablyD．
A．read the whole face       B．focus on the mouth
C．judge by the voice        D．look into the eyes
54．People used to believe thatD．
A．some facial expressions of emotions were too complex to be recognized
B．people in the world interpreted basic emotions in different ways
C．people could only recognize the facial expressions of basic emotions
D．people all over the world understood basic emotions almost in the same way．

闂傚倷鑳剁划顖炲礉濡ゅ懎绠犻柟鎹愵嚙閸氳銇勯弬鍨稏婵炲矈浜弻锟犲炊閳轰椒鎴风紒鐐劤椤兘骞冨Δ鍛仭闁绘鐗婇幏閬嶆⒑閸濆嫭锛旂紒鏌ョ畺閺佸秹骞囬鈺冨枛瀹曟鎳栭埡鍐ㄧ倞

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

16．Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing，but it can give a false sense of security．
New research shows long-term sleep loss cannot be cured that easily．Scientists researched the effects of short-and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up，but experience steadily slower reaction times as the day goes by，even if they had tried to catch up the previous night．
The research has important safety significances in an increasingly busy society，not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night．
"We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things，and this effect equals to drinking too much when driving，"said lead researcher Dr．Daniel Cohen of Boston's Brigham and Women's Hospital．But when those who suffer long-term sleep loss become all-nighters，"the harm is increased ten times，"Cohen said．
The National Institutes of Health says adults need seven hours to nine hours of sleep for good health．Regularly getting too little sleep increases the risk of health problems，including memory impairment and a weakened immune system．More immediately，too little sleep affects reaction times； sleepiness is to blame for car crashes and other accidents．
It has critically important complicated and unexpected results for anyone who works"crazy hours"and thinks they are performing fine with a few hours of weeknight sleep，said Harris，director at New York's Montefiore Medical Center．"Don't think you can just bank up your sleep on the weekend，because it doesn't work that way，"he warned．
61．The text mainly advises peopleC．
A．to sleep more time
B．to sleep in on Saturday
C．to sleep scientifically
D．to sleep little on weekend
62．People with long-term sleep lossB．
A．are quicker in thinking
B．may feel refreshed soon after waking up
C．are surely energetic
D．can have a strong sense of security
63．What can we learn from the text？B
A．Most of the Americans get six hours or less of sleep a night．
B．Staying up is worse for those who suffer long-term sleep loss．
C．Traffic accidents have little to do with sleepiness．
D．One in six Americans are all-nighters．
64．Which of the following is the immediate effect of long-term sleep loss？C
A．Health problems
B．Immune system
C．Reaction times
D．Memory impairment
65．The underlined phrase"bank up"in the last paragraph most probably meansA．
A．pile up      B．pick up      C．add up               D．build up．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

3．No one wants to be tested．We would all like to get a driver's license without answering questions about rights of way or showing that we can parallel park a car．Many future lawyers and doctors probably wish they could join their profession without taking an exam．
But tests and standards are a necessary fact of life．They protect us from unskilled drivers，harmful products and dishonest professionals．In schools too exams play a．constructive role．They tell public officials whether new school programs are making a difference and where new investments are likely to pay off． They tell teachers what their students have learned--and have not．They tell parents how their children are doing compared with others their age．They encourage students to make more effort．
It is important to recall that for most of century，educators used intelligence tests to decide which children should get a high-quality education．The point of IQ testing was to find out how much children were capable of learning rather than to test what they had actually learned．Based on IQ scores，millions of children were assigned to dumbed-down programs instead of solid courses in science，math，history，literature and foreign language．
This history reminds us that tests should be used to improve education．Every child should have access to a high-quality education．Students should have full opportunity to learn what will be tested； otherwise their scores will merely reflect whether they come from an educated family．
In the past few years，we have seen the enormous benefits that flow to disadvantaged students because of the information provided by state tests．Those who fall behind are now getting extra instruction in after-school classes and summer programs．In their efforts to improve student performance，states are increasing teachers salaries，testing new teachers and insisting on better teacher education．
Performance in education means the mastery of both knowledge and skills．This is why it is reasonable to test teachers to make sure they know their subject matter，as well as how to teach it to young children．And this is why it is reasonable to assess whether students are ready to advance to the next grade or graduate from high school．

63．According to the passage，school exams enableA．
A．governments to make right policies
B．students to meet their teachers'requirements
C．teachers to understand if their students have made efforts
D．parents to compare their kids'achievements across schools
64．"Dumbed-down programs"in Paragraph 3refer to the programs whichB．
A．lead to high-quality education
B．are less academically challenging
C．are intended for intelligent students
D．enable children to make steady progress
65．Which of the following does the author probably agree with？A
A．Disadvantaged students can benefit from state tests．
B．Tests should focus on what students have actually learned．
C．Intelligent tests decide if children should get a high-quality education．
D．Intelligent tests are helpful in seperating excellent students from poor ones．
66．What is the purpose of the passage？B
A．To re-assess the value of IQ testing．
B．To defend the role of testing in education．
C．To explain what high-quality education means．
D．To call for thorough and complete reform in education．

查看答案和解析>>

科目：高中英语 来源： 题型：选择题

13．That is just _________ challenging job all the workers want to get．Do you have anyone in _________ mind for it？（　　）

A．

a； the

B．

the；/

C．

the； the

D．

a；/

查看答案和解析>>

科目：高中英语 来源： 题型：填空题

20．I feel relaxed after visit to the countryside with my family．加 a （visit）．

查看答案和解析>>

科目：高中英语 来源： 题型：填空题

17．Four Habits to Help You Succeed
We all want to succeed，whether it's in losing weight or learning the guitar．For those who have tried and failed，success seems difficult to understand．Why does one person succeed while another person fails？（36）E
1．Identify your core（核心）values．
Finding your core values is in line with creating inner motivation．（37）C Pick a handful of things and actually write them down．Remind yourself of your values every day，and reflect on whether you are honoring those values through your work．
2．Pick a goal and focus on it．
Choose one goal to start something large enough that will give you a sense of accomplishment，while adjusting well to your core values．Focus is key here．（38）F If you perform many tasks at a time，you might never complete your projects because they will take far too long．
3．Set a deadline for success．
Set a date for success．Identify when you hope to achieve your goal．（39）D By setting a time limit，you are making the process more real．
4．（40）A
Failure can't be avoided when you take risks．By its very definition，the desire to succeed means you are risking failure．Many people tend to give up far too early．Don't fall into this trap!Remember your mindset earlier．Know it will happen．A failure is merely you working out the details，and learning what works and what doesn't．Use failure．Treat it as a good thing，and march on!

A．Stick to your goal．
B．Make the right decision．
C．Sit and reflect on what you value most．
D．Keep it realistic，while not giving you too much time．
E．I've made a list of four habits to help you set goals and achieve them．
F．The more focused you are on one goal，the higher chance you have of success．
G．Push yourself to be courageous，and take that next step．

查看答案和解析>>

科目：高中英语 来源： 题型：阅读理解

13．Every morning，some people may have the habit of watching the astrological （占星术的）advice on the TV news before they go to work．When reading magazines，some people might first go to the section on astrological predictions to determine what's in store for them in the coming day，week or month．This interest in astrology is especially strong at the beginning of a new year．Immediately before a new year，many astrological experts are making predictions and giving advice．It seems that astrology is gaining popularity，but how popular is astrology and is it actually trustworthy？
According to a study by searchterms．com，the word astrology is the most searched topic on the Internet，and a search for astrology on Google will bring up nearly two million websites．A study by the newspaper USA Today shows that a third of all Americans believe in astrology and spend almost $100million a year on it．More surprisingly，the fastest-growing group of believers in America is made up of managers and professionals．No wonder Donald Regan，former White House Chief of Staff，said，"It's common knowledge that a large percentage of Wall Street brokers use astrology．"
The most famous astrologer is Nostradamus．Long ago，he correctly predicted events such as the Second World War，the killing of U．S．President John F．Kennedy，and most recently，the attack on the World Trade Center．Another famous astrologer，Frau Elsbeth Ebertin，accurately predicted that Adolph Hitler would become Führer-the leader after she was given Hitler's birth chart．In fact，Hitler himself was a believer in astrology．It's thought that he used an astrologer throughout the Second World War．The wife of former American president Ronald Reagan，Nancy，was also a firm believer in astrology．She employed an astrologer to ask about President Reagan's future safety after the president was shot．
Though some people may consider astrology superstitious （迷信的），others think it is both a science and an art．Since the moon has an effect on the ocean，and 75percent of the human body is made up of water，it is reasonable to say that astrology，a study of the stars，may affect humans as well．Therefore，if viewed in this way，astrology may be believable and it is easy to see why it is so popular．
36．What is the main idea of the article？B
A．More and more people，especially stars，are interested in astrology．
B．Astrology is becoming popular and has some basis in science．
C．Famous astrologers can predict events correctly．
D．People should use astrology every day．
37．Which of the following events was NOT predicted by Nostradamus？D
A．The terrorist attack on the World Trade Center．
B．The killing of President Kennedy．
C．The outbreak of World WarⅡ．
D．The birth of Führer Hitler．
38．What can we learn from the passage？A
A．Astrology is one of the most popular topics on the Internet．
B．Astrology can help change people's lives for the better．
C．Only a few Wall Street brokers use astrology．
D．Most of Americans believe in astrology．
39．The author tends to think astrology isC．
A．boring B．puzzling C．believable D．strange．

查看答案和解析>>

同步练习册答案

练习册

高中

初中

小学