单项选择题

The revival of the railroad service will be immensely ______ for the Speedy movement of passengers and cargo.

A．beneficial
B．profitable
C．beneficiary
D．proficient
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单项选择题
I don't think her ability is in ______; what I question is her attitude.
A．debate
B．dispute
C．trouble
D．action
单项选择题
Charity toward others is the ______ of her philosophy.
A．base
B．basis
C．fundament
D．rudiment
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