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 Rearly 75 percent using a simple optical illusion．Butst．ripes,called chevrons(人字形)，painted on ther rads 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 t。repeat Japan’s success．Starting next year，the foundati。n will paint cheyrons and。ther pattems of stripes on selected roads around the country to test how well the patterns reduce highway erashes．
Excessive(too great)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(danger)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。ften 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 reallv are but als0 make a lane appear to be narrower．The result is a longer lasting reduction in highway speed and the number of traffic accidents．

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

小周毕业于某外语学院，4年前通过公务员录用考试，现在小周作为公务员努力工作，他的一位异国定居的表哥给他来信，说已为他联系好一所大学，并争取到了奖学金，让他辞掉工作，速去学校深造。经过反复考虑，小周终于下定决心辞掉工作去国外留学。但他向所在单位提出申请时，有关部门的领导说小周工作时间不到可辞职的年限，不能批准。小周对此很想不通，认为辞职是公务员的权利，不批准是不对的。而他的同事却笑他不明白国家公务员辞职制度。 请谈谈你的看法。