2. 外语
  3. 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

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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.
【C1】
选项 A、category
B、group
C、race
D、species
答案D
解析 该题考查名词词义辨析。category种类；group群体；race种族；species物种。根据句意及下文对鸟类的实验可知，此处表达的意思是人类自认为是一个知道他人有自己想法的特殊物种，故选D。
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