单项选择题

A．They are talking about summer jobs.
B．They are, talking about employment and unemployment.
C．They are talking about school laborers.
D．They are talking about child education.
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单项选择题
A．Five and a half years.B．Six years and six months.C．Four and six months.D．Seven anda. half years.
A．Five and a half years.
B．Six years and six months.
C．Four and six months.
D．Seven anda. half years.
单项选择题
A．A code number.B．An agent.C．An airliner.D．A heavy bomber.
A．A code number.
B．An agent.
C．An airliner.
D．A heavy bomber.
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