OG上一阅读题求参详 百思不得解~~

nkglUID：2618535

Paragraph 2: The Biological Approach. Numerous biological structures and chemicals
appear to be involved in aggression. One is the hypothalamus, a region of the brain. In
response to certain stimuli, many animals show instinctive aggressive reactions. The
hypothalamus appears to be involved in this inborn reaction pattern: electrical stimulation of
part of the hypothalamus triggers stereotypical aggressive behaviors in many animals. In
people, however, whose brains are more complex, other brain structures apparently moderate
possible instincts.
1. According to paragraph 2, what evidence indicates that aggression in animals is related
to the hypothalamus?
○Some aggressive animal species have a highly developed hypothalamus.
○Artificial stimulation of the hypothalamus results in aggression in animals.
○Animals behaving aggressively show increased activity in the hypothalamus.
○Animals who lack a hypothalamus display few aggressive tendencies.

my key:2
key:3

nkglUID：2618535

这个题的答案就从这句话中可以看出：In response to certain stimuli, many animals show instinctive aggressive reactions.
有了刺激——到海马组织——然后animal出现了aggressive reactions
答案3是对的，而你 ...
水晶小鱼 发表于 2009-8-14 14:09

The
hypothalamus appears to be involved in this inborn reaction pattern: electrical stimulation of
part of the hypothalamus triggers stereotypical aggressive behaviors in many animals.
可是从这句话不是看出，电刺激这个部位使动物产生aggressive reactions，这不就是第二个选项么，实验不就是这么做？通过人工电刺激一些部位看动物的反应，从而得出这些部分的作用