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
Among the lowest of the judicial ranks, justices of the peace nevertheless frequently exercise jurisdiction over a variety of misdemeanors.
A．guidance
B．sovereignty
C．authority
D．suzerainty
单项选择题
The whole of the endowment was used to refurbish the school gymnasium.
A．millionaires
B．endorsements
C．governments
D．donations
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