单项选择题
A．The electricity had gone off during the night. B．Bob had set the alarm wrong. C．Bob did not want to be late. D．The Internet had informed the radio of a traffic jam.
A．One of the biggest barriers to Internet use is getting wires into rural areas. B．The wireless computers will be cheaper. C．People in rural areas don't have anything else to do. D．People in rural areas already have wireless boxes on their roofs.
A．In the doctor's houses. B．In the patient's house. C．On the road side. D．In the hospital.