单项选择题

The bicycle is a form of transport whose ____________ we take for granted.

A．expenditure
B．satisfaction
C．coordination
D．convenience
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单项选择题
I must find someone to act as a (an) ____________ for me during my absence.
A．agent
B．delegate
C．representative
D．deputy
单项选择题
She was the first woman to ____________ office as a female Prime Minister.
A．catch
B．hold
C．seize
D．grasp
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