单项选择题

What is the main subject of the passage

A．Business management policies.
B．Needn't driving to work.
C．Extending the workplace by means of computers.
D．Computers for child-care purposes.
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单项选择题
Which of the following does the author mention as a possible disadvantage of telecommuting
A．Small children can't understand the boundaries of work and play.
B．Computer technology is not advanced enough to meet the needs of every situation.
C．Technological troubles can destroy the program.
D．The worker often does not have all the needed resources at home.
单项选择题
Which of the following is an example of telecommuting as described in the passage
A．A scientist in a laboratory developing plans for space station.
B．A writer sending via computer documents created at home.
C．A computer technician repairing an office computer network.
D．A teacher directing computer-assisted learning in a private school.
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