单项选择题

All of the dental instruments need to be ______ before the next patient is seen.

A．heated
B．scalded
C．sterilized
D．burned
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单项选择题
His evident ______ to his wife despite her indiscretion proved him to be a man of integrity.
A．personality
B．character
C．fidelity
D．morality
单项选择题
My supply of confidence slowly ______ as the deadline approached.
A．withdrew
B．eliminated
C．exterminated
D．diminished
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