A．Because some adults have got a not very happy childhood.
B．Because most adults are not confident enough with themselves.
C．Because many adults have blocks and self-imposed limitatious.
D．Because some adults fred it meaningless to do that.
A．He used to be fascinated by music.
B．He had a bad relationship with his family.
C．He had lots of different dreams.
D．He made great efforts on his schoolwork.
A．School courses.
B．Various activities.
C．Curiosity and uncertainty.
D．Psychological techniques.