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
单项选择题
A．National unity.B．Cheap transportation.C．The decline of Atlantic seaports.D．Movement of the population.
A．National unity.
B．Cheap transportation.
C．The decline of Atlantic seaports.
D．Movement of the population.
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