单项选择题

A．The man thinks traveling by air is quite safe.
B．The woman never travels by plane.
C．Both speakers feel nervous when flying.
D．The speakers feel sad about the serious loss of life.
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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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