Railroad & Special第 27 / 80 题
Before crossing the tracks, the driver should:
a.Turn up the radio to stay alert
b.Keep the bus in a high gear
c.Open the door and window, look and listen in both directions
d.Signal students to stand up
解析
The driver opens the service door and driver's window, then looks and listens carefully in both directions for an approaching train. Reducing interior noise helps the driver hear a train horn. Only when certain no train is coming should the driver proceed.
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