单项选择题

A power failure created ______ in transportation.

A．enclosure
B．emergency
C．extension
D．excitement
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单项选择题
The sergeant's orders were perfectly ______.
A．executed
B．exercised
C．developed
D．applied
单项选择题
The government ______ a mass campaign to wipe out malaria (疟疾) in the are
A． initiatedB. modifiedC. participatedD. comprised
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