52. What is most dangerous for motorcyclists? (A) Their own careless behavior. (B) Barriers in the road. (C) Livestock on the road.

57. When a vehicle approaches from the opposite direction at night and the driver is requesting for the other vehicle to yield, (A)use high beam light, honk loudly to warn the vehicle and then speed through (B)stop immediately, and turn off all the lights until the other vehicle passes (C)turn on the low beam lights and slow down to pass each other.