READ THE PASSAGE THEN CIRCLE THE BEST OPTION A, B, C OR D TO COMPLETE THE FOLLOWING QUESTIONS OR STATEMENTS

QUESTIONS 52 – 61:

Read the passage then circle the best option A, B, C or D to complete the following

questions or statements.

Since the dawn of time, people have found ways to communicate with one another. Smoke signals and tribal

drums were some of the earliest forms of communication. Letters, carried by birds or by humans on foot or on

horseback, made it possible for people to communicate larger amounts of information between two places. The

telegram and telephone set the stage for more modern means of communication. With the invention of the cellular

phone, communication itself has become mobile.

For you, a cell phone is probably just a device that you and your friends use to keep in touch with family and

friends, take pictures, play games, or send text message. The definition of a cell phone is more specific: it is a hand-

held wireless communication device that sends and receives signals by way of small special areas called cells.

Walkie-talkies, telephones and cell phones are duplex communication devices: They make it possible for two

people to talk to each other. Cell phones and walkie-talkies are different from regular phones because they can be

used in many different locations. A walkie-talkie is sometimes called a half-duplex communication device because

only one

person can talk at a time. A cell phone is a full- duplex device because it uses both frequencies at the same time. A

walkie-talkie has only one channel. A cell phone has more than a thousand channels. A walkie-talkie can transmit and

receive signals across a distance of about a mile. A cell phone can transmit and receive signals over hundreds of miles.

In 1973, an electronic company called Motorola hired Martin Cooper to work on wireless communication. Motorola

and Bell Laboratories ( now AT & T) were in a race to invent the first portable communication device. Martin Cooper

won the race and became the inventor of the cell phone. On April 3, 1973, Cooper made the first cell phone call to his

opponent at AT & T while walking down the streets of New York city. People on the sidewalks gazed at cooper in

amazement. Cooper's phone was called A Motorola Dyna-Tac. It weighed a whopping 2.5 pounds (as compared to

today's cell phones that weigh as little as 3 or 4 ounces)

After the invention of his cell phone, Cooper began thinking of ways to make the cell phone available to the

general public. After a decade, Motorola introduced the first cell phone for commercial use. The early cell phone and

its service were both expensive. The cell phone itself cost about $ 3, 500. In 1977, AT & T constructed a cell phone

system and tried it out in Chicago with over 2, 000 customers. In 1981, a second cellular phone system was started in

the Washington, D.C and Baltimore area. It took nearly 37 years for cell phones to become available for general

public use. Today, there are more than sixty million cell phone customers with cell phones producing over thirty

billion dollars per year.

52. What is the main idea of the passage?

A. The increasing number of people using cell phone. B. The difference between cell phones and

telephones.

C. The history of a cell phone

D. How Cooper competed with AT& T.

53. What definition is true of a cell phone?

A. The first product of two famous corporation.

B. A hand-held wireless communication device.

C. Something we use just for playing games.

D. A version of walkie-talkie.

54. What is wrong about a walkie-talkie?

A. It has one channel.

B. It was first designed in 1973.

C. It can be used within a distance of a mile.

D. Only one person can talk at a time.

55. The word" duplex" is closest meaning to...

A. having two parts B. quick

C. modern

D. having defects

56. To whom did Cooper make his first cell phone call?

A. his assistant at Motorola

B. a person on New York street.

C. the director of his company

D. a member of Bell Laboratories.

57. How heavy is the first cell phone compared to today's cell phones?

A. ten times as heavy as B. as heavy as

C. much lighter

D. 2 pounds heavier

58. When did Motorola introduce the first cell phones for commercial use?

A. in 1981

C. in the same years when he first made a cell-phone call.

B. in 1983

D. in the same year when AT & T constructed a cell phone system.

59. When did AT & T widely start their cellular phone system?

A. in 2001

B. in 1977

C. in 1981 D. 37 years after their first design

60. What does the word" gazed" mean?

A. looked with admiration B. angrily looked

C. glanced

D. started conversation

61. The phrase " tried it out" refers to

A. made effort to sell the cell-phone

B. reported on AT& T

C. tested the cell-phone system

D. introduced the cell-phone system