单项选择题

The word "carbon" (Line 5, Par

A．2) Stands for ______.A. intelligent robotsB. a chemical elementC. an organic substanceD. human beings
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单项选择题
A robot can be used to expand our frontiers when ______.
A．its intelligence and cost are beyond question
B．it is able to bear the rough environment
C．it is made as completes as the human brain
D．its architecture is different from that of the present ones
单项选择题
In what way can we make a machine intelligent
A．By making it work in such environments as deserts, oceans or space.
B．By working hard for 10 or 20 years.
C．By either properly programming it or changing its structure.
D．By reproducing it.
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