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VI. Main idea Which statement or statements best express the main idea of the text? Why did you eliminate the other choices?

 1. Nonvolatile memories are less important than main and auxiliary memories.

 2. There are several types of nonvolatile memories.

 3. Optical disks is the only type of auxiliary memory used in computer systems.

VII. Understanding the passage Decide whether the following statements are true or false (T/F) by referring to the information in the text. Then make the necessary changes so that the false statements become true.

T F

  1. Optical disks aren’t widely used because of their small memory capacity.

  2. EPROM and EAROM are employed mainly for writing purposes.

  3. Nonvolatile memories can keep data and information within a few minutes after the electricity is off.

  4. Flash memory is a rewritable type of nonvolatile memories.

  5. Optical disks are manufactured only in one size of 3.5 inches.

  6. A ROM chip is based on the operating principle of the transistor.

  7. Nonvolatile memories are usually used for general purposes.

VII. Locating information Find the passages in the text where the following ideas are expressed. Give the line reference.

…… 1. Storage capacity of optical disks makes them popular among users.

…… 2. ROMs are used for long-term keeping of the information and data.

…… 3. A ROM chip uses the binary system.

…… 4. EPROM and EAROM are mostly used as one-purpose memories.

…… 5. Optical disks use operating means different from those used in other disk types.

IX. Contextual reference Look back at the text and find out what the words in bold typeface refer to.

1. … do not lose their content…

2. … they are used…

3. … which uses optical…

4. … it developed from…

5. … the largest ones can…

6. … they are widely used…

(l. 5) ………………………

(l. 16) ………………………

(l. 19) ………………………

(l. 20) ………………………

(l. 24) ………………………

(l. 26) ………………………

X. Understanding words Refer back to the text and find synonyms for the following words.

1. secondary

2. application

3. on the contrary

4. changeable

5. to demand

(l. 1) ………………………

(l. 11) ………………………

(l. 12) ………………………

(l. 13) ………………………

(l. 28) ………………………

Now refer back to the text and find antonyms for the following words.

  1. neither … nor

  2. general-purpose

  3. often

  4. late

  5. small

(l. 9) ………………………

(l. 16) ………………………

(l. 16) ………………………

(l. 21) ………………………

(l. 24) ………………………

XI. Word forms Choose the appropriate word to complete the sentences. Make sure to use the correct form.

1. repetition, repeat, repetitive, repeatedly, repeating

a. There are some people who … to arrive late to class whenever they are working on a program because they forget the time.

b. A computer can do … operations without getting tired or bored.

c. …, which can be a boring and unproductive task has been eliminated with the use of computers.

d. A computer can … the same operation over and over again accurately without becoming bored or tired.

2. alteration, alter, altered

a. When a program doesn’t work properly, it is often necessary to make … to it.

b. The omission of data from a program can … its results.

c. The use of the computer in business has … the workload of many people.

3. basis, base, based, basic

a. The binary system is … on two digits: 0 and 1.

b. The decimal system uses 10 as a … whereas the hexadecimal system uses 16.

c. Data … management involves structuring and organizing data so as to make them useful and available to more than one particular user.

d. Flowcharting is a … step in programming.

4. instruction, instruct, instructed, instructor

a. Our math … explained to us the principles of binary arithmetic.

b. We were … to document our programs very carefully.

c. Both … and data have to be changed to machine code before the computer can operate on them.

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