题目内容

_________units are meaningless and____________units have distinct and identifiable meaning.

A. Primary/secondary
B. First/ second
C. Minimal/secondary
D. Secondary/ Primary

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The descriptive of a language at sometime point in time is a_______study.

A. descriptive
B. prescriptive
C. synchronic
D. diachronic

People can not use language as freely as he likes because ().

A. Language is also conventional. Eg. We cannot change the expression of idiom.
B. Language is not arbitrary at the syntactic level.
C. There is an arbitrary relationship between the sound and its meaning for all words.

Pragmaticsisthestudyoflinguisticactsandcontextsinwhichtheyareperformed.

A. 对
B. 错

液压系统中液压泵的实际工作压力取决于( )

A. 额定压力
B. 流量
C. 负载
D. 电机功率

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