A milepost on the towpath read "21" on the side facing the hiker as she approach

游客2024-01-13  15

问题 A milepost on the towpath read "21" on the side facing the hiker as she approached it and "23" on its back. She reasoned that the next milepost forward on the path would indicate that she was halfway between one end of the path and the other. However, the milepost one mile further on read "20" facing her and "24" behind. Which of the following, if true, would explain the discrepancy described above?

选项 A、The numbers on the next milepost had been reversed.
B、The numbers the mileposts indicate kilometers, not miles.
C、The facing numbers indicate miles to the end of the path, not miles from the beginning.
D、A milepost was missing between the two the hiker encountered.
E、The mileposts had originally been put in place for the use of mountain bikers, not for hikers.

答案 C

解析 该旅行者的推理做了一个假设,即面向她的数字表示到这条路起点的距离,第二块里程牌上的数字显示这个假设是错误的。相反,它们是在正面表示到路的终点的距离而反面表示到起点的距离情况下得出的数字,因此,(C)解释了这种矛盾,是正确答案;下一个里程牌放颠倒了[选项(A)]不能作为解释,因为如果该旅行者的推理是准确的,那么该里程牌两面的数字都应为22;计量单位[选项(B)]不能影响该数字变小或变大;丢失一块里程牌[选项(D)]也不影响变化的方向;交通工具的形式[选项(E)]与距离无关。
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