A．Stretch your hand for a handshake.
B．Show a big smile on your face.
C．Tell your name, then ask for the other’s.
D．Simply say "Hi" with a slight nodding.

A．People who feel bad spent more time on the Internet.
B．Using internet can cause depression and loneliness.
C．Internet use can improve psychological well-being.
D．Surfing Net for a few hours a week cannot cause bad feelings.