A．To help people communicate without seeing each other.
B．To help conduct the conversation without talking with each other directly.
C．To help people get other's phone numbers.
D．To help shorten the distance between people.
A．lunatic
B．anti-technology
C．idealist
D．isolated from the outside world
A．Convenient but threatening.
B．Impersonal but useful.
C．Marvelous and indispensable.
D．Important but inaccessible.
A．send messages to people living far from her/him
B．use cell-phones on no occasion
C．answer the phone himself when at home
D．Use the ATM card when necessary