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．The relationship between mice, rats and monkeys.B．The relationship between diet and animals.C．The relationship between diet and man.D．The relationship between diet and health.
A．The relationship between mice, rats and monkeys.
B．The relationship between diet and animals.
C．The relationship between diet and man.
D．The relationship between diet and health.
填空题
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