2. 外语
  3. Motoring Technology 1. 2 million road deaths worldwide occur each year, plus a further 50 million injuries. To reduce car cr

Motoring Technology 1. 2 million road deaths worldwide occur each year, plus a further 50 million injuries. To reduce car cr

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问题                         Motoring Technology
    1. 2 million road deaths worldwide occur each year, plus a further 50 million injuries. To reduce car crash rate, much research now is focused on safety and new fuels—though some electric vehicle and biofuel research aims at going faster.
    Traveling at speed has always been risky. One cutting edge area of research in motoring safety is the use of digital in-car assistants. They can ensure you don’t miss crucial road signs or fall asleep. The use of artificial intelligence software allows these assistants to monitor your driving and makes sure your phone or radio doesn’t distract you at a vital moment. Most crashes result from human and not mechanical faults.
    Some safety developments aim to improve your vision. Radar can spot obstacles in fog, while other technology "sees through" high-sided vehicles blocking your view.
    And improvements to seat belts, pedal controls and tyres are making driving smoother and safer. The color of a car has been found to be linked with safety, as have, less surprisingly, size and shape.
    And alternatives to fossil-fuel based petrol, such as plant oils, are a hot area of research. Fuel cells based on hydrogen burn cleanly, and are the subject of a serious research effort.
    But whatever is in the fuel tank, you don’t want a thief in the driving seat and there have been many innovations, some using satellite tracking and remote communications, to fight against car theft. These communication systems can also come into play if you crash, automatically calling for help.
    Accidents cause many traffic jams, but there are more subtle interplays between vehicles that can cause jams even on a clear but busy road, such jams can be analyzed using statistical tools. Robotic drivers could be programmed to make traffic flow smoothly and will perhaps one day be everyone’s personal chauffeur, but their latest efforts suggest that won’t be soon.
According to the second paragraph, most road accidents happen______.
选项 A、because drivers fall asleep
B、because drivers make mistakes
C、because of engine failure
D、because of speeding
答案B
解析 细节考查题。题干考查的是根据第二段内容，大多数车祸发生的原因。答案参见本段最后一句，Most crashes result from human and not mechanical faults，大多数撞车事故都是人为造成的，而非机械故障。故正确答案为B。
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