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【题目】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% 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 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 on 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(危险)are the greatestcurves, exit slopes, traffic circles, and bridges.

Some studies suggest that straight, horizontal bars painted across roads can at first 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 drives 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 speed and the number of traffic accidents.

1The passage mainly discusses________.

Aa new way of highway speed control

Ba new pattern for painting highways

Ca new approach to training drivers

Da new type of optical illusion

2On roads painted with chevrons, drivers tend to feel________.

Athey should avoid speed-related hazards

Bthey are driving in the wrong lane

Cthey should slow down their speed

Dthey are approaching the speed limit

3The American Automobile Association Foundation for Traffic Safety plans to________.

Atry out the Japanese method in certain areas

Bchange the road signs across the country

Creplace straight, horizontal bars with chevrons

Drepeat the Japanese road patterns

4What does the author say about straight, horizontal bars painted across roads?

AThey are falling out of use in the US.

BThey are applicable only on broad roads.

CThey cannot be applied successfully to traffic rules.

DThey tend to be ignored by drivers in a short period of time.

5The advantage of chevrons over straight, horizontal bars is that the former________.

Acan keep drivers awake

Bcan cut road accidents in half

Cwill have a longer effect on drivers

Dwill look more attractive

【答案】1A

2C

3A

4D

5C

【解析】1主旨大意题。文章的主题句往往位于文章的开头或是结尾,本文就在第一自然段。

2.细节题。文章最后一段,表明chevrons给驾车人的印象比他们开的实际的要快。而且路也变窄了,所以他们会放慢速度。

3细节题。由文章第三段最后一句话,他们将在选择的道路上实验这种方法。

4细节题。文章倒数第二段最后一句话“...within months as drivers become used to seeing the painted bar.”可知。

5细节题。根据文章最后两段可以看出chevrons的优点在于效果长久。

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