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
Having lived in Italy for thirty years, Vivian and her husband moved to make a_________ home in New York.
A．periodic
B．persistent
C．permissible
D．permanent
单项选择题
Some people think that a _________ translation, or word-for-word translation, is easier than a free translation.
A．literal
B．linear
C．liberal
D．literary
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