单项选择题

Questions 11 to 18 are based on the conversation you have just heard

A．He was on vacation.
B．He was working for another company.
C．He was sick.
D．He was attending a conference.
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单项选择题
A．A librarian.B．A secretary.C．An engineer.D．A teacher.
A．A librarian.
B．A secretary.
C．An engineer.
D．A teacher.
单项选择题
A．Stop the flow of blood if the person is bleeding.B．Do an operation whenever necessary.C．Do artificial respiration if the person has stopped breathing.D．Do the best you can until a doctor arrives.
A．Stop the flow of blood if the person is bleeding.
B．Do an operation whenever necessary.
C．Do artificial respiration if the person has stopped breathing.
D．Do the best you can until a doctor arrives.
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