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雅西高速途经拖乌山时,被设计建设成图示双螺旋形状,开车进入隧道,不是直行,而是一路往左转圈,在不知不觉中向上爬升。读图完成下列各题。
下列有关静脉的叙述,正确的是( )
Have you the people here? It is said that they have a kind of strange illness.