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’m the only one who knows what gold looks like,” he says. “It’s a lot of fun.”

　　49. 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

　　50. 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

　　51. 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

　　52. 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.

Entering the drama room I am immediately surrounded by the familiar sights, smells and sounds. Streaks（线条）of light cast by the blinds of the tall  36  send shafts（杆状物）of light through the dusty air. I take a  37  and the concrete and paint  38  tickle my nose. I  39  everything about this room.
　　Some of the  40  time of my life have been spent here. It’s ironic, but the  41  is the only place where I feel that I don’t have to  42  to be someone I’m not. Like many teenagers, I almost  43  think that people are judging me, but when I act, that feeling disappears. People only look at your  44  ability, not your clothing, money, choice of friends, or any of the other ways people are usually  45 .
　　When I’m on stage, everything else disappears. All the worries and  46  of the outside world are put on hold. Nervousness is still present,  47  it’s the excited kind, not the uneasy  48  of being different and alone.
　　I  49  love to work backstage and on lighting. I  50  you could find another girl who would work on a dusty ladder  51  to ropes and love every second of it. It makes me unique and gives me a sense of  52  to know that I succeed in an area where  53  people — and actually no girls — do.
　　Like others, I’m often insecure, not  54  who I am or where I’m going in life. Wherever that may be, I will always have the  55  I get from theater.

36. A. walls                B. doors                   C. windows                D. roofs

37. A. deep breath      B. last look                C. long walk      D. short break

38. A. looks         B. smells               C. tastes                  D. sounds

39. A. forget               B. make            C. love            D. own

40. A. lost                B. busy          C. tiring                    D. best

41. A. stage               B. school                  C. office                  D. home

42. A. prove               B. expect       C. pretend               D. refuse

43. A. constantly       B. seriously         C. hardly         D. honestly

44. A. competitive   B. acting           C. creative       D. communicating

45. A. reminded        B. encouraged          C. judged       D. offered

46. A. responses      B. anxieties              C. pressures            D. complaints

47. A. but                    B. however               C. and           D. though

48. A. sight       B. thought              C. feeling       D. fact

49. A. seldom              B. absolutely        C. relatively            D. almost

50. A. hope                 B. admit            C. promise         D. doubt

51. A. added             B. applied              C. related                D. attached

52. A. duty                  B. pride                   C. humor           D. relief

53. A. many     B. few              C. little                     D. some

54. A. sure of           B. afraid of               C. strict at                 D. interested in

55. A. chance          B. energy               C. benefit        D. confidence

Travis laughed as he tore at the wrapping paper on his birthday present．He was so 　36　 ! Finally, he would have the coolest pair of name-brand basketball shoes．

All the guys on his team were wearing the name-brand shoes of a popular basketball 　37 , Chuck Hart． 　 38　 Hart was criticized for his poor sportsmanship and infamous 　39 , he was a great player．In fact, Travis wasn't thinking about Hart' s behavior; he had only expected to see Hart' s 40　 on the side of the box．The first indication that something was 　41　 came as he tore away the last piece of paper．Not Hart' s．The new shoes were the name-brand of another player, Robert Ryann, who was 　42　 for his amazing work in the community．

Travis's hands　 43 　; his heart stopped．It wasn't that the Ryann shoes weren't nice, but what would his friends think ?

They were the wrong shoes and Travis would be 　44　 by the other players． When he looked up into his dad' s eyes, however, Travis knew he 45 tell him． "'Thanks, Dad．I was really hoping for shoes," Travis said as he pulled the shoes out of the box．

Next morning his dad drove him to school．When they 46　 in front of his destination, Travis slowly opened the car door．Just then, his dad stopped him．

"Hey, Travis, wait a minute, look"…" his dad said 47　 "Travis, I know those aren' t the shoes you had hoped for, but I saw the names of the two guys and made a（n）　 48　 The guy whose name is on those shoes," he said, pointing down at Travis’s feet, "is someone I 　49　 .Do you know how often Ryann has found himself in 　50 ?"

　　 "No," Travis said．

" Never．He' s never talked back to his coach or started a fight, and he' s a team player．You could have acted like a 　51　 when you didn't get the shoes you wanted, Travis, 　52　 you were polite and made the best of it．You have 　 53 , like the guy whose name is on these shoes．I' m hoping that someday, your name will be on the coolest pair of shoes I' 11 ever see．"

When Travis looked down at his feet, he saw the shoes　 54　 . His dad had used his mind and heart to give the son a thoughtful 　55　 .

36．A．surprised　　 　 B．ashamed　　 　　 C．excited　　　　　 　　 D．worried

37．A．team　　　 　　 B．player　　 　　　 C．coach　　　　　 　　　 D．game

38．A．Unless　　　 　 B．If　　　　 　　　 C．Because　　　 　　　　　 D．Although

39．A．skill　　　　 　　 B．performance 　　 C．behavior　　　　　 　　 D．action

40．A．name　　　 　 B．photo　　　 　　 C．sign　　　　　　 　　 D．model

41．A．strange　　 　　 B．wrong　　　 　　 C．true　　　　　　　 　 D．funny

42．A．known　　　 　 B．encouraged 　　 C．adopted　　　　　 　　 D．influenced

43．A．fell　　　　 　 B．froze　　　　 　 C．shook　　　　　　 　 D．folded

44．A．questioned　 　　 B．noticed　　 　　 C．teased　　　　　　 　　 D．attacked

45．A．mustn't　　 　　　 B．needn't　　 　　　 C．wouldn't　　　　 　　　 D．couldn't

46．A．pulled up　 　　 B．put up　　 　　　 C．took up　　　　　 　　 D．turned up

47．A．peacefully　 　　 B．hesitantly　 　　 C．delightedly　　　　 　　 D．naturally

48．A．choice　　　 　 B．effort　　　 　 C．comment　　　　 　　 D．mistake

49．A．believe　　 　　 B．miss　　　 　　 C．admire　　　　　 　　 D．remember

50．A．danger　　　 　 B．anger　　　 　　 C．sorrow　　　　　 　　 D．trouble

51．A．teammate　 　　 B．adult　　　 　　 C．kid　　　　　　　 　　 D．student

52．A．so　　　　 　　 B．and　　　　 　　 C．but　　　　　　　 　　 D．or

53．A．honor　　　 　 B．courage　　 　　 C．dream　　　　　　 　　 D．belief

54．A．clearly　　　 　 B．carefully　　 　　 C．patiently　　　　　 　 D．differently

55．A．gift　　　　 　 B．look　　　　 　 C．hope　　　　　　 　　 D．lesson

　 Travis laughed as he tore at the wrapping paper on his birthday present. He was so 36 ! Finally, he would have the coolest pair of name-brand basketball shoes.

　 All the guys on his team were wearing the name-brand shoes of a popular basketball 37 , Chuck Hart. 38_ Hart was criticized for his poor sportsmanship and infamous 39_ , he was a great player. In fact, Travis wasn’t thinking about Hart’s behavior; he had only expected to see Hart’s 40 on the side of the box. He realized that something was 41 as he tore away the last piece of paper. Not Hart’s. The new shoes were the name-brand of another player, Robert Ryann, who was 42 for his amazing work in the community.

　 Travis’s hands 43 ; his heart stopped. It wasn’t that the Ryann shoes weren’t nice, but what would his friends think?

　 They were the wrong shoes and Travis would be 44 　by the other players. When he looked up into his dad’s eyes, however, Travis knew he 45 tell him. “Thanks, Dad. I was really hoping for shoes,” Travis said as he pulled the shoes out of the box.

　 Next morning his dad drove him to school. When they 46 in front of his destination, Travis slowly opened the car door. Just then, his dad stopped him.

　 “Hey, Travis, wait a minute…” his dad said 47 “Travis, I know those aren’t the shoes you had hoped for, but I saw the names of the two guys and made a(n) 48 . The guy whose name is on those shoes,” he said, pointing down at Travis’s feet, “is someone I 49 . Do you know how often Ryann has found himself in 50 ? ”

　 “ No,” Travis said.

　 “ Never. He’s never talked back to his coach or started a fight, and he’s a team player. You could have acted like a(n) 51　 when you didn’t get the shoes you wanted, Travis, 52 you were polite and made the best of it. You have honor, like the guy whose name is on these shoes. I’ m hoping that someday, your 53 will be on the coolest pair of shoes I’ll ever see.”

　 When Travis looked down at his feet, he saw the shoes 54　 . His dad had used his mind and heart to give the son a thoughtful 55　 .

36. A. surprised　　 B. ashamed　 　　　　 C. excited　　 　　　　　 D. worried

37. A. team　　　 　　 B. player　　 　　　　　 C. coach　　 　　　　　 D. game

38. A Unless　　　 　　 B. If　　　　　 C. Because　 　　　　　 D. Although

39. A. skill　　　　 B. performance　 　　 C. behavior　 　　　　　　 D. action

40. A. name　　　 B. photo　　　　 　 C. sign　　　 　　　　　　 D. model

41. A. strange　　 　　 B. wrong　　　 C. true　　　 　　　　　 D. funny

42. A. known　　 　　 B. encouraged　 C. adopted　　 　　　　　 D. influenced

43. A. fell　　　　 　　 B. froze　　　　 C. shook　　　 　 D. folded

44. A. questioned　 　　 B. noticed　　　 C. teased　　　 　 D. attacked

45. A. mustn’t　　 　 B. needn’t　　　 C. wouldn’t　 　　　　　 D. couldn’t

46. A. pulled up　　 B. put up　　　 　　　 C. took up　　 　　　　　 D. turned up

47. A. peacefully　 B. hesitantly　　 　　 C. delightedly　 　 D. naturally

48. A. choice　　　 B. effort　　　 　　 C. comment　 　　　　　 D. mistake

49. A. believe　　 　　 B. miss　　 　　　　　　 C. admire　　 　　　　　　 D. remember

50. A. danger　　　 B. anger　　 　　　　 C. sorrow　　 　　　　 D. trouble

51. A. teammate　 　　 B. adult　　 　　　　　　 C. kid　　　　 　　　　　 D. student

52. A. so　　　　 　　 B. and　　　 　　　　　　 C. but　　　　 　　　　　 D. or

53. A. honor　　　 　　 B. courage　 　　　　　　 C. name　　 　　　　　　 D. belief

54. A. clearly　　　 B. carefully　 　　　　 C. patiently　 　　　　　　 D. differently

55. A. gift　　　　 　　 B. smile　　　 　　　　　 C. wish　　 　　　　　　 D. lesson