题目内容
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提问人:网友hxdjxnu
发布时间:2022-01-07
[主观题]
In order to ensure the safety of passengers, ______
A、the Pilatus Mountain Railway operates only from May to November every year
B、a cog-wheel rail is laid between the two tracks of the Pilatus Mountain Railway
C、the trains along Pilatus Mountain Railway run very slowly, and the maximum speed is only 12 km/h
D、the Pilatus Mountain Railway was suspended for only 3 times
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