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Ask why most people are right-handed, and the answer might fall along the same lines as why fish school (鱼成群地游). Two neuroscient
Ask why most people are right-handed, and the answer might fall along the same lines as why fish school (鱼成群地游). Two neuroscient
admin
2018-01-31
50
问题
Ask why most people are right-handed, and the answer might fall along the same lines as why fish school (鱼成群地游). Two neuroscientists suggest that social pressures drive individuals to coordinate their behaviors so that everyone in the group gets an evolutionary edge.
Approximately 85 percent of people prefer their right hand, which is controlled by the left hemisphere of the brain. One theorized benefit of locating a particular function in one hemisphere is that it frees the other to deal with different tasks. But that idea does not explain why population-wide trends for handedness exist in the first place.
Moreover, evidence gleaned in recent years has overturned the long-held belief that human handedness is a unique by-product of brain specialization attributable to language. A suite of studies has revealed brain lateralization in species from fish to primates (灵长类). Last August, for instance, scientists discovered that in the wild, chimpanzees show hand preferences.
The presence of lateralization throughout the animal kingdom suggests some benefit from it, contend neuroscientists Giorgio Vallortigara and Lesley Rogers. Also, last August, in the journal Behavioral and Brain Sciences, the two presented evidence to support their idea that social constraints force individuals toward asymmetry in the same direction. They noted, for example, that baby chickens attack more readily when a threat appears on their left.
Which of the following is the best title for this passage?
选项
A、Human Handedness and Animal Lateralization
B、Hand Preference of Chimpanzees
C、The Myth Behind Human Handedness
D、A Unique Animal Behavior
答案
A
解析
本文探讨的是人类左右手习惯与动物行为侧向性之间的联系。选项B、C、D只是短文某一方面内容,太片面。故选A。
转载请注明原文地址:https://kaotiyun.com/show/hcLi777K
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在职申硕(同等学力)英语
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