单项选择题

His ______ in German as well as English earned him the chance to work in the prestigious college.

A．deficiency
B．sufficiency
C．efficiency
D．proficiency
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单项选择题
The soldier found himself ______ a hero when he returned to his village.
A．someone of
B．someone
C．something
D．something of
单项选择题
______, he will apologize for his rudeness towards the professor at the conference.
A．One out of ten
B．Ten to one
C．One out of a hundred
D．One to ten
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