单项选择题

A．Submarines.
B．Ships and planes.
C．Trains and cars.
D．Florida and Boston.
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单项选择题
A．Industry and education have a clear mutuality of interest.B．Businessman and educators have harmonious friendship.C．Industry and training are inseparable.D．Universities and corporation contributions are not regarded as supreme importance.
A．Industry and education have a clear mutuality of interest.
B．Businessman and educators have harmonious friendship.
C．Industry and training are inseparable.
D．Universities and corporation contributions are not regarded as supreme importance.
单项选择题
A．Never.B．Once,C．Three times.D．Six times.
A．Never.
B．Once,
C．Three times.
D．Six times.
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