单项选择题

A．He needs to press F7 to return to the document before he prints it.
B．He has to print the document to see the page numbers.
C．The printer is not working correctly.
D．The numbers are on the screen but they don’t print out.
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单项选择题
A．That the man rethink their plans.B．That the man see a family doctor.C．That the man see a psychiatrist.D．That the man concentrate on his studies.
A．That the man rethink their plans.
B．That the man see a family doctor.
C．That the man see a psychiatrist.
D．That the man concentrate on his studies.
单项选择题
A．Scientists and philosophers had never studied the human body and its functions.B．Many of the ideas and theories that people used to accept were all incorrect.C．People used to accept ideas and theories.D．People used to accept undoubtedly many of the ideas and theories, correct and incorrect.
A．Scientists and philosophers had never studied the human body and its functions.
B．Many of the ideas and theories that people used to accept were all incorrect.
C．People used to accept ideas and theories.
D．People used to accept undoubtedly many of the ideas and theories, correct and incorrect.
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