单项选择题

A．Mice.
B．Rats.
C．Monkeys.
D．A, B and C
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单项选择题
A．People used to accept ideas and theories.B．People used to accept undoubtedly many of the ideas and theories, correct and incorrect.C．Scientists and philosophers had never studied the human body and its functions.D．Many of the ideas and theories that people used to accept were all incorrect.
A．People used to accept ideas and theories.
B．People used to accept undoubtedly many of the ideas and theories, correct and incorrect.
C．Scientists and philosophers had never studied the human body and its functions.
D．Many of the ideas and theories that people used to accept were all incorrect.
单项选择题
A．Two students.B．A student and a parent.C．A teacher and a student.D．A student and a supervisor.
A．Two students.
B．A student and a parent.
C．A teacher and a student.
D．A student and a supervisor.
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