单项选择题
A．to learn something B．to perfect themselves C．to improve computer skills D．to make the best use of computers
A．bond B．acknowledged C．nearly D．specially E．anywhere F．mishaps G．obligated H．likely I．conducted J．idly K．unprofessionally L．networking M．released N．confessed N．confessed
A．is the worst among all broadcasting networks B．has raised English-speaking up to a new level C．has taken a turn for the worse since the 1960s D．is terrible because of a few popular disc jockeys