单项选择题

A．He may see Alan in Italy.
B．He was looking for Alan in the library.
C．He’’s not sure which way to go.
D．He may have made a mistake.
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单项选择题
A spear or a robot has the quality of technology only when it______.
A．is used both as a cultural and a physical object
B．serves different purposes equally well
C．is utilized by man
D．can be of use to both man and animal
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