单项选择题

COMMENCEMENT: ADJOURNMEN ::

A． sapphire: fissure
B． signal: frequency
C． lasso: splice
D． activity: dormancy
E． rule: rebellion

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单项选择题

It can be inferred that a rat with its infralimbic cortices destroyed would respond which of the following ways to a tone previously conditioned to induce a fear response Ⅰ. It would demonstrate fear if extinction had occurred the previous day. Ⅱ. It would demonstrate fear if extinction had occurred earlier than the previous day. Ⅲ. It would demonstrate fear even if extinction had never occurred at all.

A． Ⅰ only
B． Ⅱ only
C． Ⅰ and Ⅱ only
D． Ⅰ and Ⅲ only
E． Ⅰ, Ⅱ, and Ⅲ

单项选择题

A． oscillate
B． slip
C． be horizontal
D． be vertical
E． be inverted

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