单项选择题

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

A．The janitor is too busy to do his work.
B．The sanitary conditions of an apartment.
C．The relationship between the janitor and the two speakers.
D．The architecture of a building.
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单项选择题
A．To keep fish alive.B．To punish criminals.C．To preserve dead bodies.D．To help heal wounds.
A．To keep fish alive.
B．To punish criminals.
C．To preserve dead bodies.
D．To help heal wounds.
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