单项选择题

To prevent flooding in winter the water flowing from the dam is constantly ______ by a computer.

A．graded
B．managed
C．conducted
D．monitored
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单项选择题
Jane is ______ because she hurt her ankle.
A．leaping
B．stamping
C．jumping
D．limping
单项选择题
Though ______ rich, ha was better off than at any other period in his life.
A．by any means
B．by some means
C．by all means
D．by no means
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