单项选择题

According to biologists, animal populations at a given time are _________ by food supplies at that time.

A．governed
B．sustained
C．mediated
D．manipulated
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单项选择题
The boy slipped out of the room and headed for the swimming pool without his parents'__________.
A．conception
B．conviction
C．consent
D．console
单项选择题
She _________ being spied on when she was sunbathing in the garden.
A．refuted
B．retorted
C．reproached
D．resented
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