Railroad & Special第 29 / 80 题
You should only start across the tracks if you are sure you can:
a.Completely clear the tracks without stopping
b.Stop halfway if a car cuts in
c.Beat an approaching train
d.Shift into a lower gear on the rails
解析
Never start across until you are certain you can get completely across without stopping. If traffic ahead might force you to stop on the tracks, wait until there is room on the far side for the entire bus. Being trapped on the tracks is a deadly situation.
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