单项选择题

A．Baby—the Parrot Detective.
B．An Amazon Parrot.
C．Rising Crime Rates in American Society.
D．How to Protect Your House.
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单项选择题
According to the passage, alcohol has something to do with bad breath mainly because______.
A．it keeps offending bacteria from reproducing
B．its smell adds to bad breath
C．it kills some helpful bacteria
D．it affects the normal flow of saliva
单项选择题
A．To clean the floor.B．To please the nurse.C．To see a patient.D．To surprise the story-teller.
A．To clean the floor.
B．To please the nurse.
C．To see a patient.
D．To surprise the story-teller.
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