GRE考试

【单选题】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

网考网参考答案：E
网考网解析：
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