单项选择题

A scanner is an ______ device which enables you to feed pictures, photos or documents into a computer system.

A．ambiguous
B．ingenious
C．intrinsic
D．rigorous
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单项选择题
The words used by the speaker may ______ unfavorable reactions in the listener which interfere with his comprehension.
A．act up
B．strike up
C．split up
D．stir up
单项选择题
Grace couldn't resist the ______ to skip work and go down to the beach.
A．impulse
B．momentum
C．stimulation
D．surge
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