单项选择题

A．Training given to music therapists.
B．How music prevents disease.
C．Studies on the benefits of music.
D．How musicians create music.
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单项选择题
A．Workers on the platforms and trains were replaced by machines.B．A completely automatic line was added to its network.C．It became the first completely automatic railway in the world.D．Its trains became manual-controlled.
A．Workers on the platforms and trains were replaced by machines.
B．A completely automatic line was added to its network.
C．It became the first completely automatic railway in the world.
D．Its trains became manual-controlled.
单项选择题
A．10 points.B．2 points.C．15 points.D．5 points.
A．10 points.
B．2 points.
C．15 points.
D．5 points.
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