Believe it or not, optical illusion 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 , painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.
Now the American Automobile 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 areas 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 bars.
Chevrons, scientists say, not only give drivers the impression that they are driving faster than they really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway sped and the number of traffic accidents.
26.The passage mainly discusses ________.
A) a new way of highway speed control
B) a new pattern for painting highways
C) a new approach to training drivers
D) a new type of optical illusion
27.On roads painted with chevrons, drivers tend to feel that ________.
A) they should avoid speed-related hazards
B) they are driving in the wrong lane
C) they should slow down their speed
D) they are approaching the speed limit
28.The advantage of chevrons over straight, horizontal bars is that the former ________.
A) can keep drivers awake
B) can cut road accidents in half
C) will have a longer effect on drivers
D) will look more attractive
29.The American Automobile Association Foundation for Traffic Safety plans to ________.
A) try out the Japanese method in certain areas
B) change the road signs across the country
C) replace straight, horizontal bars with chevrons
D) repeat the Japanese road patterns
30.What does the author say about straight, horizontal bars painted across roads?
A) They are falling 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:26.A 27.C 28.C 29.A 30.B
牛津实用英语语法 复合名词
牛津实用英语语法 27 形容词+动词不定式/that从句/介词结构
情态动词的回答方式
牛津实用英语语法 the(定冠词)在home等之前的省略
牛津实用英语语法 a little/a few和 little/few
比较can 和be able to
牛津实用英语语法 36 地点副词
牛津实用英语语法 a/an的省略
条件状语从句
牛津实用英语语法 a/an的用法
牛津实用英语语法 21各种表示比较的句子结构
限制性和非限制性定语从句
带to 的情态动词
牛津实用英语语法 29 由ly构成的副词
表原因关系
牛津实用英语语法 形容词的类别
牛津实用英语语法 23 the+形容词
牛津实用英语语法 名词的性
牛津实用英语语法 34 使用各比较等级的句子结构
牛津实用英语语法 32 far,farther/farthest和further/furthest
牛津实用英语语法 不可数名词
牛津实用英语语法 49 neither,either
牛津实用英语语法 30 词形相同的副词与形容词
比较have to和must
情态动词+ have +过去分词
比较need和dare
牛津实用英语语法 50 some,any,no和none(形容词和代词)
表示转折或对比
比较may和might
牛津实用英语语法 形容词作定语和表语时的位置
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