单项选择题
A.Bussiness management policies. B.Driving to work. C.Extending the work place by means of computers. D.Computers for child—care purposes.
A.A scientist in a laboratory developing plans for a space station. B.A technical 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.
A.New York City B.Adirondack Mountains C.Washington D.New York State