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  3. Virtual Driver Driving involves sharp eyes and keen ears, analyzing with a brain, and coordination between hands, feet and b

Virtual Driver Driving involves sharp eyes and keen ears, analyzing with a brain, and coordination between hands, feet and b

admin2012-07-30  55
问题                             Virtual Driver
    Driving involves sharp eyes and keen ears, analyzing with a brain, and coordination between hands, feet and brain. A man has sharp eyes and keen ears, analyzes through his brain, and maintains coordination between his hands and brains. He can control a fast-moving cat with different parts of his body. 46 Apparently there isn’t anyone in the driver’s cab, but there is in fact a virtual driver. This virtual driver has eyes, brains, hands and feet too. The minicameras on each side of the car are its eyes and are responsible for observing the road conditions ahead of it as well as the traffic to its left and fight. If you open the boot, you can see the most important part of the automatic driving system: a built-in computer. 47 The brain of the car is responsible for calculating the speeds objects surrounding the car are moving at analyzing their position on the road, choosing the fight path, and giving orders to the wheel and the control system.
    In comparison with the human brain, the virtual driver’s best advantage is that it reacts quickly. 48 However, it takes the world’s best racecar driver at least one second to react, and this doesn’t include the time he needs to take action.
    With its rapid reaction and accurate control, the virtual driver can reduce the accident rate on expressways considerably. In this case, is it possible for us to let it have the wheel at any time and in any place? 49 With its limited ability to recognize thing’s, the car can now only travel on expressways.
    The intelligent car determines its direction by the clear lines that mark the lanes clearly and recognizes vehicles according to their regular shapes. 50 This being the case, people still have high hopes about driverless cars, and think highly intelligent cars are what the cars of the future should be like.
A Experts say that we cannot do that just yet.
B In the near future, intelligent cars will be put into commercial operation.
C This is the brain of the car.
D But how does an intelligent car control itself?
E It completes the processing of the images sent by the cameras within 100 milliseconds.
F However, it cannot recognize moving people and bicycles on ordinary roads that have no clear markings on them.
选项
答案C
解析 “空47”前面一句意思是，如果你打开车身后部的行李箱，你就能看到自动驾驶系统中最重要的部件，嵌入式计算机。“空47”后面句子中的the brain of the car自然是指前句的built—in computer，但接得太突然。选项C“This is the brain of the car．”就把前后句子联系起来了。this指代上一句的built—in computer。后面句子的the brain of the car是重复选项C中的the brain of the car，显得很自然。所以C是答案。
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