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  3. An Intelligent Car Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human dr

An Intelligent Car Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human dr

admin2009-06-15  39
问题                                        An Intelligent Car
Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human drivers have all(51) and can control a fast-moving car. But how does an intelligent car control itself?
There is a virtual driver in the smart car. This virtual driver has "eyes", "brains", "hands" and "feet", too. The minicameras(52)each side of the car are his "eyes", which observe the road conditions ahead of it. They watch the(53) to the car’s left and right. There is also a highly(54) driving system in the car. It is the built-in computer, which is the virtual driver’s "brain". His "brain" calculates the speeds of(55) moving cars near it and analyzes their positions. Basing on this information, it chooses the right(56) for the intelligent car, and gives(57) to the "hands" and "feet" to act accordingly. In this way, the virtual driver controls his car.
What is the virtual driver’s best advantage? He reacts(58) . The minicameras are(59)images continuously to the "brain." It(60)the processing of the images within 100 milliseconds. However, the world’s best driver(61)needs one second to react.(62) , when he takes action, he needs one more second.
The virtual driver is really wonderful. He can reduce the accident(63)considerably on expressways. In this case, can we let him have the wheel at any time and in any place? Experts(64)that we cannot do that just yet. His ability to recognize things is still(65)He can now only drive an intelligent car on expressways.
选项 A、space
B、locations
C、instructions
D、time
答案C
解析 本句前半句说的是电脑选定了路径，接下来自然是“……给‘手’发出指令 (instructions)，‘手’就做出相应的动作”。所以C是答案。space，locations，time的同义与上下文的意思衔接不上。
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