A．Not making any changes about the trading skills,
B．Realizing the factors of a successful trade too late.
C．Caring too much about the previous failures.
D．Not knowing how to communicate with others.
A．It is highly probable.
B．It could be avoided.
C．It must be ignored.
D．It is good experience.
A．It promotes sales.
B．It costs too much.
C．It doesn't work well.
D．It is easy to do.