单项选择题

A．At the end of the online catalogue.
B．At the Reference Desk.
C．In the New York Times.
D．In the Reader’s Guide to Periodical Literature.
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单项选择题
A．The personnel manager should be fired for inefficiency.B．A few engineers should be employed to modernize the factory.C．The entire staff should be retained.D．Better educated employees should be promoted.
A．The personnel manager should be fired for inefficiency.
B．A few engineers should be employed to modernize the factory.
C．The entire staff should be retained.
D．Better educated employees should be promoted.
单项选择题
A．Synthetic fuel.B．Solar energy.C．Alcohol.D．Electricity.
A．Synthetic fuel.
B．Solar energy.
C．Alcohol.
D．Electricity.
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