单项选择题

A．Air traffic conditions.
B．Traffic jams on highways.
C．Road conditions.
D．New traffic rules.
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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 retrained.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 retrained.
D．Better educated employees should be promoted.
单项选择题
A．He has been to Seattle many times.B．He has chaired a lot of conferences.C．He holds a high position in his company.D．He lived in Seattle for many years.
A．He has been to Seattle many times.
B．He has chaired a lot of conferences.
C．He holds a high position in his company.
D．He lived in Seattle for many years.
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