Many small roads do not have painted markings along their edges. Clear edge markings would make it easier for drivers to see upcoming curves and to judge the car's position on the road, particularly when visibility is poor, and would therefore seem to be a useful contribution to road safety. However, after Greatwater County painted edge markings on all its narrow, winding roads, the annual accident rate along those roads actually increased slightly.
Which of the following, if true, most helps to explain the increase in accident rate?
(A) Greatwater County has an unusually high proportion of narrow, winding roads.
(B) In bad weather it can be nearly as difficult for drivers to see the road as it is at night.
(C) Prior to the painting of the edge markings, Greatwater County's narrow, winding roads already had a somewhat higher accident rate than other Greatwater County roads.
(D) Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.
(E) After the markings were painted on the roads, many drivers who had gone out of their way to avoid driving on those roads at night no longer did so.
问题分析：A说这个国家有更高比例的狭窄的多风的路段，这个选项显然解释不了原文那个现象，杀。B说司机在坏天气下和在晚上看道一样困难，原文没提，杀。C 说在图edge marking之前，原文围绕的是图了之后的事件展开的，这个选项范围明显不对。D 说发生在这种道路上的车祸经常是一个车离开道路而不是两车相撞。原文没说，杀。E 说图了之后，会对driver产生一些影响，和文章信息有联系，留着（这个影响可以随便演绎，不一定是选项的这个，不知各位是否可以听懂这句话。）
