单项选择题

A．About every five minutes.
B．about every six minutes.
C．About every seven minutes.
D．About every eight minutes.
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单项选择题
A．Courses for doctors.B．Courses for businessmen.C．Courses for reporters.D．Courses for lawyers.
A．Courses for doctors.
B．Courses for businessmen.
C．Courses for reporters.
D．Courses for lawyers.
单项选择题
A．The woman has trouble getting along with the professor.B．The woman regrets having taken up much of the professor’s time.C．The woman knows the professor has been busy.D．The woman knows the professor has run into trouble.
A．The woman has trouble getting along with the professor.
B．The woman regrets having taken up much of the professor’s time.
C．The woman knows the professor has been busy.
D．The woman knows the professor has run into trouble.
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