单项选择题

What is not the element in defining language

A．systemic
B．arbitrary
C．symbol
D．visual
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单项选择题
Special words used in technical discussion______
A．never last long
B．are considered artificial language speech
C．should be confined to scientific fields
D．may become part of common speech
单项选择题
______is the core of leader ship of the British government.
A．parliament
B．privy council
C．central government
D．cabinet
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