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Humans like to regard themselves as exceptional. Many philosophers believe humans are the only【C1】______which understands that o
Humans like to regard themselves as exceptional. Many philosophers believe humans are the only【C1】______which understands that o
admin
2012-12-25
30
问题
Humans like to regard themselves as exceptional. Many philosophers believe humans are the only【C1】______which understands that others have their own personal thoughts. That understanding is known in the【C2】______as having a "theory of mind," and it is considered the 【C3】______to such cherished human【C4】______as sympathy and deception.
Biologists have learned to treat such【C5】______with caution. Bemd Heinrich and Thomas Bugnyar describe an experiment they have carded out【C6】______ravens.
【C7】______to gaze is reckoned to be a good【C8】______of the development of theory of mind in human children. 【C9】______about 18 months, most children are able to follow the gaze of another person, and【C10】______things about the gazer from it. Failure to【C11】______this trick is an early symptom of autism, a syndrome whose main underlying feature is a(n) 【C12】______to understand that other people have【C13】______, too.
To【C14】______whether ravens could follow gaze, Dr Heinrich used six six-month-old hand-reared ravens. The birds were set, one at a time, on a perch on one side of a room divided by a barrier. An experimenter in front of the barrier【C15】______his head and eyes in a particular【C16】______and gazed for 30 seconds before looking【C17】______. Dr Heinrich found that all the birds were able to follow the gaze of the experimenters, even【C18】______the barrier. In the【C19】______case, the curious birds either jumped down from the perch and walked around the barrier to have a【C20】______or leapt on top of it and peered over.
【C9】
选项
A、With
B、In
C、By
D、At
答案
D
解析
该题考查介词用法。with表示伴随;in表示在…中;by表示手段;at表示在某一点。根据文意可知,此处表示的意思是对于儿童年龄段的描述,at意为“在…期间;在…岁时”,符合文意,故选D。
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