单项选择题

He _________ over the beginning of a major build-up of agents, equipment and technology.

A．administered
B．presided
C．mastered
D．executed
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单项选择题
Overall, there are several major issues _________ us on the media front right now.
A．confining
B．confirming
C．conforming
D．confronting
单项选择题
The police are _________ that this incident may be linked to a similar attack two weeks ago.
A．foreseeing
B．fabricating
C．speculating
D．contemplating
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