单项选择题

This lamp is too far from the outlet. You may need an extensive ______.

A．wire
B．cord
C．string
D．rope
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单项选择题
We were too tired to go on with our work, ______ we had a break.
A．accordingly
B．conversely
C．primarily
D．frequently
单项选择题
These technical achievements should be ______ by a committee of experts before they are put into use.
A．counted
B．numbered
C．evaluated
D．computed
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