Language is used for （ ）because language is possessed only by human beings and it allows people to say things to one another and to express their thoughts and needs.
Language is a （ ）in that elements of language are combined according to rules. Every language contains a set of rules.
Language is a system. It is organized into （）levels simultaneously.
（）means that any human being can be both a producer and a receiver of messages.
By saying language is （ ） we mean we can't give a sound reason why such a form is pronounced in this way rather than in that way, and why a particular meaning should be indicated by this form rather than by that form.
Fill in each of the following blanks with a word or an expression.
The writing system came into being much than the spoken forms and that they only attempt to capture sounds and meaning on paper.
Language has two levels .They are meaningful level and sound meaningless level.
Language is ( ) because the primary medium for all languages is sound.
The fact that children acquire spoken language before they are able to read or write also indicates that language is primarily .
The structuralists regarded as an edifice or a well-defined object.
Language is because the primary medium for all languages is sound.
Two types of symbols may be identified: and auditory symbols.
（）refers to the fact that language is culturally transmitted.
The majority of linguistic expressions are in fact（）.
（）features refer to the defining properties of human language that distinguish it from any animal system of communication.
Some people suggest that there is sex differentiation in the actural （）use.
（） is passed on from one generation to the next through teaching and learning, rather than by inheritance.
The organization of language into two levels, one of sounds, the other of meaning. is known as （）.
In fact only huamn beings have a special capacity for （）that is not shared by other animals.
（）features are uniquely a part of human language and unlikely to be found in the communication systems of other creatures.
than the spoken forms and that they only attempt to capture sounds and meaning on paper.