[A] its power source
[B] its driving system
[C] its monitoring system
[D] its seating capacity
12. What is the authors main concern?
[A] How to make automobiles pollution-free
[B] How to abandon automobiles in the future.
[C]How to solve the problem of traffic jams.
[D]How to develop a computerized subway system.
13. What provides autos with electric power in a computerized highway system?
[A] A rail.
[B] An engine.
[C] A retractable arm.
[D] A computer controller.
14. In a computerized highway system, all the driver needs to do is ________.
[A] keep in the right lane
[B] wait to arrive at his destination
[C] keep in constant touch with the computer center
[D] inform the system of his destination by phone
15. What is the authors attitude toward the future of autos?
[A]Enthusiastic. [B]Cynical. [C]Optimistic. [D] Cautious.
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