B) He believes that they will control us in the future.
C) He is not quite sure in what way they may influence us.
D) He doesnt consider the construction of such machines possible.
18. The word carbon stands for _________.
A) intelligent robots
B) a chemical element
C) an organic substance
D) human beings
19. 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 complex as the human brain
D) its architecture is different from that of the present ones
20. It can be inferred from the passage that _______.
A) after the installation of a great number of cells and connections, robots will be capable of self-reproduction
B) with the rapid development of technology, people have come to realize the possibility of making a machine with human-like ability
C) once we make a machine as complex as the human brain, it will posses intelligence
D) robots will have control of the vast, man-made world in space
Passage Three
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