151. Why is the schedule being adjusted?
(A) To add more stops to the route
(B) To facilitate track repairs
(C) To accommodate a holiday schedule
(D) To test new high-speed trains
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統計: A(3), B(115), C(2), D(4), E(0) #3804709
統計: A(3), B(115), C(2), D(4), E(0) #3804709