求解托福OG阅读 Pg77 Aggression

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第一题
According to paragragh 2, what evidence indicates that aggression in animals is related to the hypothalamus?
a. some aggressive animals have a highly developed hypothalamus
b. artificial stimulation of the hypothalamus results in aggression in animals
c. animals behaving aggressively show increased activity in hypothalamus
d. animals who lack a hypothalamus display few aggressive tendencies

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