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.作者: satan338 时间: 2012-10-12 17:56
PS第9题,A是直角,这个条件漏了,错误真心多,希望大家找到了帮着指出来……作者: satan338 时间: 2012-10-12 17:58
3L正解,确实是这道作者: 普罗旺斯的树 时间: 2012-10-12 18:06
楼主记忆力好厉害。。帅作者: shun523 时间: 2012-10-12 18:24
单膝置顶作者: satan338 时间: 2012-10-12 19:28
补一道数学 8张桌子,都是长X米,宽Y米,都铺桌布,下垂至桌面下1/2米,求下垂的面积一共是多少?【8x+8y+8】作者: chasedream22 时间: 2012-10-12 19:54
楼上那题不是应该是 8X+8Y么 还有个8哪来的啊作者: zkybq 时间: 2012-10-12 19:54