单项选择题

Crew chiefs supervised engines, switches and lights that told them how each item of equipment was functioning.

A．observed
B．preserved
C．monitored
D．nurtured
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单项选择题
Professional archivists and librarians have the resources to duplicate materials in other formats and the expertise to retrieve materials trapped in ______ computers.
A．abstract
B．obsolete
C．obstinate
D．obese
单项选择题
Many Fine Art graduates take______professional practice as artists, and this course encourages them to consider their role as artists in the community by providing opportunities for short-term placements outside the Faculty.
A．down
B．up
C．out
D．in
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