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题库 / Prep2007E1-CR-18
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?
Greatwater County has an unusually high proportion of narrow, winding roads.
In bad weather it can be nearly as difficult for drivers to see the road as it is at night.
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.
Many of the accidents on narrow, winding roads involve a single vehicle veering off the road, rather than the collision of two vehicles.
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.
看不懂E选项……no longer did so 是说他们不再那样做，怎么做呢，就是不敢在夜间行驶，反过来说就是画了线后他们敢在晚上行驶了
因果/类比
本来应该：标清路的边→开车更安全；
但现在没有，然并卵
加强，即看看”本来“与”现在“间的不同点
A、本来路就窄，与标不标清楚边、安全无关
B、坏天气看不见路，列举特殊情况，与标不标清楚边、安全无关
C、标清边之前，一些更窄的路事故更多，主要对比的是宽窄，无法削弱我们需要的那个因果联系，不是”本来“/”现在“对比
D、一个车出事故比两车多，无法削弱我们需要的那个因果联系，不是”本来“/”现在“对比
E、标清边后，本来一些车绕道走→现在它们不了；证明”本来“与”现在“的不同，削弱标边和安全的因果联系，CORRECT
E选项：没画marking前，司机都不敢在这些路上开夜车，现在画了marking，他们开始开夜车了，所以事故率就上去了
no longer did so
可以这么理解吗： e是在说在这种路上开车的人变多了？所以可能的车祸也会增多？
ABC不能解释，排除
在DE里纠结：D貌似有道理，但顶多想表达的意思是这个marking对a single vehicle veering off the road车祸没用，并不能解释为什么增加；虽然E中go out of one's way to do这里意思看不懂，但整体说的应该是marking后给司机的驾驶带来改变（好的或坏的），既然ABCD都排除了，那么带来的改变猜猜应该是坏的。
go out of one's way to do 不厌其烦做某事
开到路外面躲避其他车辆。
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many drivers had gone out of their way to avoid driving on those roads ，许多司机都特意避免在那些路上开车
make it easier for drivers to see upcoming curves and to judge the car's position on the road，看到接下来的转弯和车子所处的位置。
D，很多车祸是因为车子开出车道，而不是因为两车相撞。
D表明program可以降低车祸率，题目是实施program后，车祸率上升了。
A，however not B ,explain
many drivers who had gone out of their way（不走这条路） to avoid driving on those roads at night （避免在晚上开车）no longer did so.
这个不可以理解成类比推理吗
推理模式：方案推理
目标：to be a useful contribution to road safety
方案：painted edge markings on all its narrow, winding roads
评估方向：CQ3 方案否定性副作用，C 和 E提出了方案，保留，但C不能说明和方案的联系，排除， E由于划线后之前不在晚上行驶的车辆，现在晚上都在行驶。
个人浅见，Road有edge是有很多好处的，然而某村划了很多edges反而加重车祸，why? A某村太多narrow，没解释什么就是描述了一个事实。B天气原因，直接排除，这个原因应该和edges road 这些有关，再者哪个城市都有好坏天气，不能作为解释这个问题的原因。C也是描述个事实，没有解释原因。D，许多事故发生在窄巷子的单行道而不是双行道，看似可以，但不能解释Increase.题目是在某村划了很多edges反而是事故增加，原因应该和edges有关，所以E最合适。