2. 外语
  3. A language is a signaling system which operates with symbolic vocal sounds, and which is used by a group of people for the purpo

A language is a signaling system which operates with symbolic vocal sounds, and which is used by a group of people for the purpo

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问题     A language is a signaling system which operates with symbolic vocal sounds, and which is used by a group of people for the purpose of communication.
    Let’s look at this【C1】______in more detail because it is language, more than anything else, that distinguishes man from the rest of the【C2】______world.
    Other animals, it is true, communicate with one another by means of cries: for example, many birds utter【C3】______calls at the approach of danger; monkeys utter different cries, such as expressions of anger, fear and pleasure.【C4】______these various means of communication differ in important ways from human language. For instance, animals’ cries do not【C5】______thoughts and feelings clearly. This means, basically, that they lack structure. They lack the kind of structure that【C6】______us to divide a human utterance into words.
    We can change an utterance by【C7】______one word in it with another: a good illustration of this is a soldier who can say, e. g. , "tanks approaching from the north",【C8】______who can change one word and say "aircraft approaching from the north" or "tanks approaching from the west"; but a bird has a single alarm cry, which means "danger!"
    This is why the number of【C9】______that an animal can make is very limited: the great tit(山雀)is a case in point; it has about twenty different calls. In human language the number of possible utterances is【C10】______. It also explains why animal cries are very general in meaning.
【C8】
选项 A、so
B、and
C、but
D、or
答案D
解析 该例子中涉及三个小层面，即： “tanks approaching from the north”，“aircraft ap—proaching from the north”和“tanks approaching from the west”。根据句中的重要提示词or，空格中的正确答案应选D项or。
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