单项选择题

A．Geology.
B．Music.
C．Medical.
D．Mathematics.
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单项选择题
A．What they have regretted for a long time.B．Their relationships with families and friends.C．What they have expected too much.D．The things they have experienced during their childhood.
A．What they have regretted for a long time.
B．Their relationships with families and friends.
C．What they have expected too much.
D．The things they have experienced during their childhood.
单项选择题
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．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.
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