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 locati
on 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 geographic
al 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.”
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 |
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 |
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 |
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. |
Have you ever thought of joining a book club and buying new books through the post? Here at the International Book Club, we already have many members buying books from us by mail.
Immediate benefits：
●As a special offer, you may choose any reduced-price books from our new members' book list, to the value of $6 in total (plus postage and packing). By doing this, you will save pounds on the publishers' prices.
●Tick the box on your form to order a free watch.
●If you reply within seven days, we will send you another free gift carefully chosen from our book list by our staff.
●Order a DVD from the many on offer in our list, at half the recommended(推荐) retail price.
●When you've joined：
As a member, you'll enjoy savings of between 30% and 50% off the publisher's price on every book you buy, and what's more, they'll come straight to your door. Your free club magazine arrives once a month, to keep you up-to-date with the latest bestsellers. This means that every year we offer over 1,000 books to choose from. On the Internet, you can find all our titles for the year on our exclusive members' website.
Being a member：
All we are asking you to do while you are a member is to choose four books during your first year. After that, you can decide on the number of books you wish to take.
In each of our monthly club magazines, our experienced staff choose a Club Choice book — a work of fiction or a reference title which they feel is particularly worth buying, and which is offered at an extra-special price. However, if you do not want this book, just say so in the space provided on the form. We will always send the book if we do not receive this.
So, return your application form today, but hurry — it's not every day we can make you an offer like this. To apply to become a member, all you need to do is simply fill in the enclosed form and return it in the envelope supplied.
Before you know it, your books will be with you. Please don't send any money now, as we will send you your bill with the books. And remember, you have up to a fortnight to decide if you wish to keep the books you have ordered. You should then either return the books or send your payment.Which of the following doesn't belong to the benefits of being a club member?
| A．Order a free watch. |
| B．Get a gift for nothing. |
| C．Get four books for free in the first year |
| D．Order a DVD at a low price. |
Every month the club provides a free club magazine in order to ________.
| A．Let readers know the number of books to be sold |
| B．Attract more and more readers to join the club |
| C．Make readers know the club's development |
| D．Keep readers well informed of recent best-selling books |
If a book is worth $100, how much will a member probably save if he buys one?
| A．$40. | B．$60. | C．$20. | D．$70. |
What should you do if you want to join the book club?
| A．Just send the club an email. |
| B．Ask other club members to recommend you to the club. |
| C．Fill in an application form and return it to the club. |
| D．Apply for a membership card. |
After you get your books, you should ________.
| A．Choose whether to keep them or not after you read them carefully |
| B．Decide whether to keep them or not within a certain period of time |
| C．Express your idea in the space provided in the book |
| D．Send money to the club at once |
As we all know, getting benched(板凳) in sports is usually a bad thing. But at one school in Florida, a girl has taken a bench and turned it into something entirely different – a place to find friends. It’s called the Friendship Bench. And it’s the brainchild of a sixth grader at Palm Bay Elementary – a girl named Acacia Woodley.
Acacia’s attitude toward life might be summed up best by a question she recently asked members of the Brevard County School Board – “what if we spend as much time putting the spotlight on kindness as we do on cruelty?” It’s a truth Acacias has learned to live her own life –in spite of having a lot of people would consider a handicap (残疾). She was born without a right hand. And her left hand did not form properly. But Acacia says that she has not stopped her from achieving her goals. “You need to believe in your dreams. If you don’t believe in you dreams, I can definitely tell you that they are not going to come true.” She said.
Acacia came up with the idea for the Friendship Bench after seeing kids getting bullied (欺凌) at school. She says she has also experienced bullying herself – kids whispering about her or picking on her because she is different. “Some people say they feel sorry for me. I tell them not to,” she said. “I don’t care that I’m different. I like being different.”
The Friendship Bench looks like a lot of other benches. It has arm sets and a place to lean on. But there are also words painted on it – words such as “hope”, “respect”, “listen” and “dream”. Acacia put the benches together with the help from her mother and brother.
Any time a kid feels he or she needs a friend, all that kid needs to do is sit on the bench. It is then up to the other kids – or grown-ups – to fill that need. “It’s a perfect idea,” Palm Bay Elementary Principal Lori said. “It’s something we’ve needed so badly.”
The Friendship Bench has been such a success at Palm Bay Elementary that other schools are now interested in installing（安装） one too. “There’s a saying in my teacher’s classroom,” Acacia said. “It says, ‘it you can dream it, you can achieve it.’”What is the function of the first sentence in Paragraph One?
| A．To explain the meaning of getting benched is sports. |
| B．To introduce the important role “bench” plays in sports. |
| C．To introduce what the author wants to say in the text to us. |
| D．To tell us that the passage is connected with the word “bench”. |
Which of the following statements is NOT true according to the passage?
| A．Acacia has also suffered from other kids’ bullying. |
| B．The kids who sit on the bench feel they need friends. |
| C．Grown-ups are allowed to offer their help to the one in need. |
| D．The Friendship Bench is different from others in the arm sets. |
What can we infer from the passage?
| A．More Friendship Benches will be installed in other schools soon. |
| B．Students stop bullying other schoolmates at Palm Bay Elementary. |
| C．The students at Palm Bay Elementary have become more friendly. |
| D．Acacia has become a very important figure at Palm Bay Elementary. |
What is the best title of this passage?
| A．Acacia’s New Invention | B．The Friendship Bench |
| C．Help from a Special Bench | D．Getting Benched in School |
Do you want to live with a strong sense of peacefulness, happiness, goodness, and self-respect? The collection of happiness actions broadly categorized as "honor" help you create this life of good feelings.
Here's an example to show how honorable actions create happiness.
Say a store clerk fails to charge us for an item. If we keep silent, and profit from the clerk's mistake, we would drive home with a sense of sneaky excitement. Later we might tell our family or friends about our good fortune. On the other hand, if we tell the clerk about the uncharged item, the clerk would be grateful and thank us for our honesty. We would leave the store with a quiet sense of honor that we might never share with another soul.
Then, what is it to do with our sense of happiness?
In the first case, where we don't tell the clerk, a couple of things would happen. Deep down inside we would know ourselves as a type of thief. In the process, we would lose some peace of mind and self-respect. We would also demonstrate that we cannot lie trusted, since we advertise our dishonor by telling our family and friends. We damage our own reputations by telling others. On the contrary, bringing the error to the clerk's attention causes different things to happen. Immediately the clerk knows us to be honorable. Upon leaving the store, we feel honorable and our self-respect is increased. Whenever we take honorable action we gain the deep internal rewards of goodness and a sense of nobility.
There is a beautiful positive cycle that is created by living a life of honorable actions. Honorable thoughts lead to honorable actions. Honorable actions lead us to a happier existence. And it's easy to think and act honorably again when we're happy. While the positive cycle can be difficult to start, once it's started, it's easy to continue. Keeping on doing good deeds brings us peace of mind, which is important for our happiness.According to the passage, the positive action in the example contributes to our___.
| A．self-respect | B．financial rewards |
| C．advertising ability | D．friendly relationship |
The author thinks that keeping silent about the uncharged item is equal to___.
| A．lying | B．stealing | C．cheating | D．advertising |
The phrase "bringing the error to the clerk's attention" (in para. 5) means___.
| A．telling the truth to the clerk |
| B．offering advice to the clerk |
| C．asking the clerk to be more attentive |
| D．reminding the clerk of the charged item |
How will we feel if we let the clerk know her mistake?
| A．We'll be very excited. |
| B．We'll feel unfortunate. |
| C．We'll have a sense of honor. |
| D．We'll feel sorry for the clerk. |
Which of the following can be the best title of this passage?
| A．How to Live Truthfully |
| B．Importance of Peacefulness |
| C．Ways of Gaining Self-respect |
| D．Happiness through Honorable Actions |
We all love our parents and turn to them when we’re in need, but would you like them to hear the conversations you have with your friends in the school playground or lunch queue? Social networking sites, such as micro-blog, blog and the Facebook, have actually become extensions of the school hallways（走廊）, so would you add your parents as “friends” and allow them to view your online activities and conversations with friends?
In the past the generation gap included a technology gap, where children were up to date with latest technology and parents were left behind, content to continue their day to day lives as they always had because they had no need to be good at new technology. However, more and more parents are beginning to realize just how important social networks are in their lives. This realization has given many parents the motivation (动机) to educate themselves about social networking sites.
These days many people are attracted to social networking sites because they can choose who they have around them; there’s also a certain amount of control over privacy that we don’t get in real life. Sometimes we feel that privacy is invaded when we must accept a “friend” request from a parent or family member.
It’s a difficult choice whether or not to allow a parent to become a part of our online lives. On the one hand we don’t want to “refuse” their request because that might hurt their feelings or make them feel you have something to hide. On the other hand if you do accept, then you could have a sense of being watched and no longer feel free to comment or communicate the way you did before.
A recent survey suggested that parents shouldn’t take it personally if their child ignores their request: “When a teen ignores a parent’s friend request, it doesn’t necessarily mean that they are hiding something, but it could mean that this is one part of their life where they want to be truly independent.”
Perhaps talking with parents and giving explanations would help soften the blow if you do choose not to add them to your friends list.The underlined sentence in paragraph 1 means that _______________.
| A．students begin to communicate on some websites |
| B．students may log in micro-blog on school hallways |
| C．students can find pictures of hallways on micro-blog |
| D．schools begin to build their hallways on the Internet |
According to paragraph 2, parents nowadays __________________.
| A．are not content with their life any more |
| B．are all very good at new technology |
| C．go to school to learn new technology |
| D．begin to know their children through network |
What can we infer from paragraph 3, 4 and 5？
| A．People like network because they can choose friends as they like. |
| B．People cannot keep all their privacy on social networking sites. |
| C．Children refuse their parents’ “friend” request to hide something |
| D．Refusing parents “friend” request on the internet will hurt their feelings. |
According to the passage, if Jack, a 17-year-old high school student refuses a “friend” request from his mother on micro-blog, ____________.
| A．it means he will feel being watched and unsafe then |
| B．it is because Jack wants to own his independence |
| C．his mother will know that Jack wants to keep privacy |
| D．a quarrel will break out between Jack and his mother |
What is the passage mainly taking about?
| A．Children are more likely to turn to parents when they need help. |
| B．Children should be “friends” with their parents in order not to hurt parents. |
| C．It is a question to children whether to be “friends” with their parents. |
| D．There are some ways preventing children from hurting parents’ feelings. |
Most likely, you aren’t the family breadwinner. But doing a small job or getting a weekly allowance (零花钱) would put some money in your pocket. For kids and grown-ups alike, money is easy to spend. If you aren’t careful, it can be going in no time.
Being responsible with your money is an important skill to learn — and the sooner you start the better. Whether you are tracking your spending or saving for something special, creating a budget can help you deal with your expenses and plan for the future. All you need are paper and a pencil — and some self-control.
First, take a look at our sample monthly budget. Then, use a separate sheet of paper to plan your own. In the first two columns (栏), list your sources (来源) of income and how much you expect to earn from them. In the third and fourth columns, list what you expect to spend your money on and the amount.
The left-hand total should be more than or equal to the right-hand total. If it is, you have an effective budget. Budgets are not complex, but sticking to them can be tough. When planning your budget, be realistic about your expenses. If you know that you drop $18 at a movie, don’t write $12 in that space simply because you wish you were spending less.
If you are eyeing a big purchase, such as a $150 skateboard, spend less and save more until you have the total amount. No matter how attractive it may be, avoid spending your savings. One day, you will thank yourself!
| Monthly Income |
Amount |
Monthly Expense |
Amount |
| Allowance |
$20.00 |
Snacks |
$20.00 |
| Money earned selling drinks |
$25.00 |
Music downloads |
$12.00 |
| Money earned babysitting |
$12.50 |
Movies |
$18.00 |
| Money earned delivering newspapers |
$30.00 |
Video rental |
$10.00 |
| Total |
$87.50 |
Total |
$66.00 |
Who is the passage written for?
| A．Children. | B．Parents. |
| C．Breadwinners. | D．Bank managers. |
The purpose of making a budget is to help people _________.
| A．learn to be realistic | B．increase their saving |
| C．manage their money well | D．test their power-control |
What should people do when planning a budget?
| A．Fill in the expenses as they really are. |
| B．Avoid spending money on expensive things. |
| C．Set aside a fixed amount of money as savings. |
| D．List income and expenses on two pieces of paper. |
Which of the following budgets is effective?
The passage mainly tells us _______.
| A．the importance of making a budget |
| B．how to make a budget |
| C．how to form good habits |
| D．how to spend money |