单项选择题

A role-play session is particularly useful in bringing together different ______ of teaching.

A．cords
B．fibres
C．threads
D．strands
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单项选择题
There has been an encouraging ______ to the appeal for contribution to the Famine Relief Fund.
A．reply
B．response
C．return
D．acknowledge
单项选择题
An executive has to have a lot of ______ to reach the top.
A．attention
B．acceleration
C．affection
D．ambition
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