Obviously, the boys in Jonesboro and Chicago do not have any ______.

A．The United States Copyright Office created it.
B．It does not protect artists’ techniques and procedures.
C．It has not been changed since its creation.
D．It is applied only to copies of the original work.

A．Those dream interpretations are based on psychological thesis.
B．We can find nothing reliable in those interpretations.
C．Some dream interpretations have scientific support.
D．Most of the interpretations of dreams are not very believable.