单项选择题

She had to be very _________to feed such a large family, especially when her husband was out of work.

A．economic
B．economical
C．careful
D．efficient
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单项选择题
He was shocked to discover that things dragged on well_________ the two weeks he had anticipated.
A．from
B．for
C．away
D．beyond
单项选择题
The little boy demonstrated a remarkable_________ ability; his calculation with figures was faster and more accurate than any one of us here.
A．numeral
B．numerical
C．numerous
D．numerable
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