单项选择题

______the giant panda belonged to the bear______ raccoon families was a matter of zoological contention for many years.

A．Whether...or
B．That...and
C．As...and
D．That...or
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单项选择题
Science is the systematic______ of knowledge using nature itself or laboratory models and experiments.
A．acquisition
B．exploration
C．survey
D．pursuit
单项选择题
A．anotherB．the otherC．othersD．other
A．another
B．the other
C．others
D．other
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