PREP CR 18 与答案的思路不同 求解释

foreverprada

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.
该题的答案是E，但是我觉得是C
理由：原文最后一个单词slightly让我觉得原本应该造成更多的事故，而现在事故的数量只是微微上升。C中说原本该路段的事故数量已经很高，所以现在变得更危险后，事故数量再怎么增加，也只是轻微的上升了。
8号考试了，求指点，谢谢。

aomeisoft7

路边缘涂记号。因为 记号能 使驾驶者更容易看到 转弯，提高道路安全。然而，在G 涂记号后，事故率反而上升了。
“理由：原文最后一个单词slightly让我觉得原本应该造成更多的事故” 这是不对的，路上涂记号的作用是为了道路安全，预期的结果应该是：事故率下降

但是现在事故更多了，是因为以前 不走这条路的司机 想到这条路安全了，就开始使用这条路，所以造成轻微的事故率上升

foreverprada

谢谢啦，看了一天脑子糊涂了~
祝成功！