More railroad crossing should feature _____.
A: warning lights
B: crossing gates
C: fencing
D: quiet zone
A: warning lights
B: crossing gates
C: fencing
D: quiet zone
举一反三
- More railroad crossings should feature ___________.
- All crossings that experience hourly traffic, including pedestrian ______, should feature both bells and crossing gates. A: crossings B: ell
- Be careful when you ________ the street. A: are crossing B: is crossing C: crossing D: is cross
- ______be careful when crossing the street! A: Must B: Should C: Ought to D: Do
- When doing Skewed Crossing, one should march to the position of the opposite after crossing.