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

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单项选择题

According to the passage, we may state that ______.

A．modern scientists and the ancient philosophers used similar techniques
B．the difference between inductive and deductive reasoning is non-existent
C．the ancient philosophers and scientists were primarily interested in "theories"
D．it is easy to convert "theory" into fact

单项选择题

The difference between facts and theory ______.

A．is non-existent
B．is that the latter needs confirmation
C．rests on the simplicity of the former
D．is the difference between the modern scientists and the ancient Greeks