单项选择题
A．saves lives of people in remote places B．enables people to live alone if they want to C．spreads both love and ill will D．replaces much written communication
A．The telephone has helped to save people from illness and fire. B．The telephone has helped to prevent wars and conflicts. C．The telephone has made the modern city neither better nor worse. D．The telephone has had positive as well as negative effects on us.
A．have already been accepted into the adult world B．feel that they are superior in a small way to the adults C．are not likely to win over the adults D．have a desire to be independent