单项选择题

64（）

A．cats
B．birds
C．boats
D．dogs

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单项选择题
Some animals will modify their behavior to ______ their environment.
A．conform to
B．adapt to
C．adjust to
D．adopt to
单项选择题
______ , the ship's captain changed course.
A．To be warned
B．To have been warned
C．Having been warned
D．Being warned
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