单项选择题

This passage is primarily concerned with ______.

A．a new language
B．technical terminology
C．various occupations and professions
D．scientific undertakings
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单项选择题
Special words used in technical discussion ______.
A．should be confined to scientific fields
B．should resemble mathematical formulae
C．are considered artificial speech
D．may become part of common speech
单项选择题
What does the circular halo placed behind the head signify in the art of the Middle Ages
A．Divinity.
B．Sainthood.
C．God.
D．Sky.
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