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 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.
单项选择题
Some students are enthusiastic for positions in student organizations probably because ______.
A．they hate the constant pressure and strain of their study
B．they will then be able to stay longer in the university
C．such positions help them get better jobs
D．such positions are usually well paid
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