Read the passage below carefully, and then choose the best answer: Background, in relation to computers, on the screen, the color on which characters

Read the passage below carefully, and then choose the best answer:
Background, in relation to computers, on the screen, the color on which characters are displayed. (1) _______, a white background may be used for black characters. In a windowing environment in which more than one program or document can be available to the user, open but currently inactive (2) _______ are said to be in the background.

In the context of operating systems and program execution, background refers to a process, or task, assigned a lower priority in the microprocessor’s share of time to tasks other than the task running in the (3) _______. A background process thus often performs its work, such as printing or checking for arriving messages on an electronic mail network, invisibly unless the user requests an update or brings the task to the foreground. (4) _______, only multitasking operating systems are able to support background processing. However, some operating systems that do not support multitasking may be able to perform one or more types of background tasks. For example, in the Apple Macintosh operating system running in Single-Launch Mode (with multitasking (5) _______), the Background Printing option can be used to print documents while the user is doing other work.
Question 26:
A. For sure
B. In fact
C. For example
D. In general
Question 27:
A. windows
B. systems
C. tasks
D. characters
Question 28:
A. background
B. foreground
C. computer
D. program
Question 29:
A. Really
B. Similarly
C. Generally
D. Hopefully
Question 30:
A. turned on
B. turned off
C. turned down
D. turned up
Question 31: What is a separate area on a computer screen which shows information and which you can move around?
A. window
B. background
C. foreground
D. environment
Question 32: Where can one program or document be available to the user?
A. On the screen
B. In a windowing environment
C. In the foreground
D. On an electronic mail network
Question 33: What often performs work, such as printing or checking for arriving messages on an electronic mail network?
A. Program execution
B. Foreground processing
C. Microprocessor
D. A background process
Question 34: Which word in the reading means “kinds”?
A. documents
B. systems
C. tasks
D. types
Question 35: What is the reading about?
A. work
B. time
C. computer
D. windows