第5部分：補全短文(第46——50題，每題2分，共10分)

下面的短文有5處空白，短文后有6個句子，其中5個取自短文，請根據短文內容將其分別放回原有位置，以恢復文章原貌。

The Magic of Sound

Music is one of the most beautiful forms of artistic expressions ever invented. In movies and plays, music has an added function: it not only moves people but also can shock people. Is it true that an ordinary musical instrument can be so powerful?

Our eardrums can withstand sound within 20 to 80 decibels. Once sound exceeds this limit, even beautiful music will become car-splitting noise and harm health. A strong blast of high sound can twist and break a solid iron sheet. 46

The noise from a plane’s engine is over 140 decibels. However, the sound of a flute is at most a few decibels. 47 It has been proven that people who have worked in an environment with a high sound intensity for a long time suffer varying degrees of heart disease or altered brain waves.

In movies, sometimes the hero can produce a sound that ordinary people can’t hear and only those who have the same ability can feel. In nature, there is actually sound that is beyond our hearing. In physics, the sound that exceeds 20,000 Hz is called ultrasonic. 48 It does no harm to health.

Sound less than 20 Hz is called infrasonic waves. When we move, the air will vibrate. 49 As the frequency of infrasonic waves is close to that of people’s internal organs, infrasonic wave may cause resonance in human bodies. As a result, people’s vision may weaken and internal organs may rupture. However, whether an infrasonic wave can be used as a weapon depends on its intensity. If its intensity is very low, it won’t damage internal organs or a person’s health. 50 When wind blows at a force of 3 or 4 over the sea, it will produce infrasonic waves of several decibels. Only typhoons can produce infrasonic waves of over 100 decibels. At present, scientists can only produce infrasonic weapons in the lab with the help of advanced scientific tools and powerful electric power.

A. High sound of 150 decibels can kill a healthy rat.

B. The vibration of air can produce infrasonic waves.

C. We cannot play high-pitched music with ordinary musical instruments.

D. If the intensity of infrasonic wave exceeds 160 decibels, it is extremely harmful.

E. Dolphins, whales and bats can make such high-frequency sound.

F. Therefore, the sound of ordinary musical instruments cannot harm your health.

參考答案：46-50 AFEBD

第6部分：完形填空(第51——65題，每題1分，共15分)

下面的短文有15處空白，請根據短文內容為每處空白確定1個最佳選項。

Car Thieves Could Be Stopped Remotely (遙遠地)

Speeding off (超速行駛) in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer (使車輛不能調動的裝置), and a radio signal from a control center miles away will ensure that once the thief switches the engine ____(51), he will not be able to start it again.

For now, such devices _____ (52) only available for fleets of trucks4 and specialist vehicles used on construction sites. But remote immobilization (使車輛不能調動) technology could soon start to trickle (慢慢地移動) down to ordinary cars, and ______(53) be available to ordinary cars in the UK____(54) two months.

The idea goes like this. A control box fitted to the car incorporates ____(55) miniature cellphone (移動電話，手機), a microprocessor and memory, and a GPS satellite positioning receiver. ____ (56) the car is stolen, a coded cellphone signal will tell the unit to block the vehicle’s engine management system and prevent the engine _____ (57) restarted.

There are even plans for immobilizers ____ (58) shut down vehicles on the move, though there are fears over the safety implications of such a system.

In the UK, an array of technical fixes is already making _____ (59) harder for car thieves. “The pattern of vehicles crime has changed,” says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part _____ (60) the motor insurance industry.

He says it would only take him a few minutes to _____(61) a novice (新手, 初學者) how to steal a car using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are a far tougher (艱苦的) proposition (任務), as their engine management computer will not _____(62) them to start unless they receive a unique ID code beamed out by the ignition (點火) key. In the UK, technologies like this _______(63) achieve a 31 per cent drop in vehicle-related crime 15 since 1997.

But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner’s keys in a burglary (夜竊行為;盜竊). In 2000, 12 per cent of vehicles stolen in the UK were taken using the owner’s keys double the previous year’s figure.

Remote-controlled immobilization system would _____(64) a major new obstacle in the criminal’s way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could go on the market sooner than the ____(65) expects.

51. A. off B. on C. at D. of

52. A. is B. was C. were D. are

53. A. can B. have to C. need to D. should

54. A. after B. for C. in D. at

55. A. the B. / C. a D. an

56. A. With B. If C. But D. And

57. A. helping B. being C. get D. be

58. A. whose B. who C. that D. when

59. A. life B. cars C. warning D. problem

60. A. about B. to C. by D. on

61. A. use B. inform C. ask D. teach

62. A. let B. allow C. make D. give

63. A. have helped B. helped C. had helped D. was helped

64. A. speak B. have C. link D. put

65. A. lawyer B. doctor C. customer D. specialist

參考答案：51-55 ADDCC 56-60 BBCAC 61-65 DBADC

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