可是这个题呢
The new bridge has alleviated downtown congestion and has saved commuters' time. Unfortunately, the constant use of the bridge last winter created numerous potholes which resulted in many accidents. If the bridge is not resurfaced before next winter the bridge will become unusable. So, the bridge must be closed temporarily.
目标：修理桥面。方案：暂时关闭大桥。暂时关闭大桥的这个方案在论述中并没有被讨论过。为什么不是方案推理而是因果推理呢？
