A．It should be eye-catching.
B．It should match that of the room．
C．It should fit the woman's taste.
D．It should be as common as possible.

A．Teens have more means to make friends.
B．Teens have less longing for more friends.
C．Teens have better understanding of friendships.
D．Teens are more tolerant of loneliness.

A．The economic changes.
B．The advanced technology.
C．Smaller families.
D．High level of self-esteem.