单项选择题

A．A student and a professor.
B．A physicist and a biologist.
C．Two students.
D．Two professors.
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单项选择题
A．Wait a minute for the Mayor.B．Give note to the Mayor.C．Write a note to the Mayor.D．Write a notice for the Mayor.
A．Wait a minute for the Mayor.
B．Give note to the Mayor.
C．Write a note to the Mayor.
D．Write a notice for the Mayor.
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