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  3. One form of driver assistance that is sure to call one’s attention is intelligent speed adaptation (ISA) — a technology for forc

One form of driver assistance that is sure to call one’s attention is intelligent speed adaptation (ISA) — a technology for forc

admin2007-12-11  109
问题     One form of driver assistance that is sure to call one’s attention is intelligent speed adaptation (ISA) — a technology for forcing a driver to observe the speed limit. This works by building into the car a digital map marked with local speed restrictions. The addition of GPS (global positioning system) navigation tells the car what the maximum speed on any given stretch of road should be. Cars are then slowed down, or prevented from accelerating, whenever they are at or above the speed limit. One way to do this is to starve the engine of fuel. Another is to add a measure of play to the accelerator pedal (油门). A third is to make the accelerator harder to push down. In future drive-by-wire vehicles, the software would refuse requests from the accelerator pedal when above the speed limit.
    However, people have different opinions as far as ISA is concerned. Whatever their opinions are, the main justification for ISA is likely to be the high cost of speeding. Studies suggest that ISA could reduce the number of accidents by as much as 40%, and the number of fatal accidents by nearly 60%. It could also improve fuel efficiency, remove the need for enforcing speed limits with cameras and policemen, and reduce the costs of insurance.
    Trials of ISA systems have already been carried out in Sweden, Denmark, the Netherlands and Britain, and more are planned in Belgium and France. Although resistance is expected from drivers as well as from motor manufacturers, ISA could be introduced gradually, first with new cars and later as retro-fitting (改装) to the remaining old cars — rather as seatbelts were introduced a generation ago. The trials show that a surprisingly large proportion of people come to accept ISA after they have lived with it for a while — again, much like the experience with seatbelts.
One of the measures to keep a car within the speed limit is______.
选项 A、to add less fuel to the engine
B、to limit the use of accelerator
C、to push down the accelerator pedal
D、to remove the pedal from accelerator
答案A
解析 本题为细节题，关键在于将第一段中三种限制汽车时速的方法与此题四个选项进行对比。选项A意为“少加油”，与第一段中“to starve the engine of fuel”意思一样，为本题正确答案。选项B意为“限制油门的使用”，文章中没有涉及。选项C意为“踩油门”，明显是加速时的动作。选项D意为“拆除油门踏板”，明显与文中所提到过的方法无关。
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