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  3. Believe it or not, optical illusion (错觉) can cut highway crashes. Japan is a case in? point. It has reduced automobile crashe

Believe it or not, optical illusion (错觉) can cut highway crashes. Japan is a case in? point. It has reduced automobile crashe

admin2011-02-28  67
问题    Believe it or not, optical illusion (错觉) can cut highway crashes.
   Japan is a case in? point. It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. Bent stripes, called chevrons (人字形) painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.
   Now the American Association Foundation for Traffic Safety in Washington D. C. is planning to repeat Japan’s success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.
   Excessive speed plays a major role in as much as one fifth of all fatal traffic accidents, according to the foundation. To help reduce those accidents, the foundation will conduct its tests in are. as where speed-related hazards are the greatest-curves, exit slopes, traffic circles, and bridges. Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed of drivers in half. However, traffic often returns to full speed within months as drivers become used to seeing the painted bar.
   Chevrons, scientists say, not only give drivers the impression that they are driving faster than they really are but also make a lane spear to be narrower. The result is a longer lasting reduction in highway speed and the number of traffic accidents.
What does the author say about straight, horizontal bars painted across roads?
选项 A、They are failing out of use in the United States.
B、They tend to be ignored by drivers in a short period of time.
C、They are applicable only on broad roads.
D、They cannot be applied successfully to traffic circles.
答案B
解析 本题属细节性问题。这个问题对应文章倒数第二段的内容，我们来对比四个选项。首先可以排除C选项They are applicable only on broad roads和D选项They cannot be applied successfully to traffic circles，因为这两个选项中的broad roads和traffic circles等词语没有在这段活中体现。A选项They are falling out of use in the United States说：它们在美国没用了，但
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