单项选择题

The machine needs a complete ______ since it has been in use for over ten years.

A．amending
B．fitting
C．mending
D．renovating
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单项选择题
The returns in the short ______ may be small, but over a number of years the in- vestment will be well repaid.
A．interval
B．range
C．span
D．term
单项选择题
Some journalists often overstate the situation so that their news may create a great ______.
A．explosion
B．sensation
C．exaggeration
D．stimulation
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