A.避免骆驼相撞
B.免费骑骆驼
C.沉浸在自然美景中
D.没有地方住
根据第二段第一句According to a Chinese state-owned wire service, the problem was that the walking paths for human beings often crossed camel paths, creating traffic chaos. (中国一家国有通讯社报道指出, 问题是人类的步行路径经常与骆驼的路径交叉, 造成交通混乱。)
以及空缺句But visitors to the Mingsha Mountain and Crescent Spring Scenic Spot will now_____, thanks to the new traffie lights, which turn green to let the animals cross and red to make them stop. (但是,由于新的交通信号灯的出现,前往明沙山和新月泉景区的游客现在_____,这些信号灯可以变绿让动物通过,变红让它们停下来。)
可知新的交通信号灯避免了人与骆驼相撞,故选A。