单项选择题

A stored-program computer has ______.

A．an adding machine
B．a brain
C．a finger
D．a memory
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单项选择题
The part of a computer that ______ is the size of the end of a finger.
A．prints the information
B．stores the information
C．does the computing
D．memorizes computing
单项选择题
When he traveled abroad, Mr. Smith（）

A．learned boxing
B．forgot all about his business
C．raised the level of production
D．shook his head all the time
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