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ÔÎÄ£ºÔÚOGÀïÒ²ÓС£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? ¡ðSome aggressive animal species have a highly developed hypothalamus. ¡ðArtificial stimulation of the hypothalamus results in aggression in animals. ¡ðAnimals behaving aggressively show increased activity in the hypothalamus. ¡ðAnimals who lack a hypothalamus display few aggressive tendencies. ÎÒÑ¡B£¬ÒòΪÔÎÄÖбêºìÉ«µÄÄǾ仰¡£ µ«ÊÇ´ð°¸Ñ¡C¡£ËùÒÔÇë½Ìһϴó¼Ò¡£ |
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qlqznb(½ð±Ò+2): 2011-03-30 20:47:53
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