单项选择题

A security officer at the factory, who ______ to give his name, said he had seen two men leave the building.

A．descended
B．decreased
C．denounced
D．declined
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单项选择题
After two years he received the certificate of the college for ______ in chemistry.
A．proficiency
B．diversion
C．immersion
D．involvement
单项选择题
The nurse asked the child to take off clothes, then she carefully ______ up the blood from the wounds and spread alcohol over it.
A．inhaled
B．scattered
C．extracted
D．sponged
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