1、Gun powder, explosives and detonating powder belong to which of the following dangerous chemicals?
A、Oxidizing materials
B、Inflammable solid materials
C、Explosives
D、Self-igniting articles
Answer：C
2、Motor vehicle drivers may make a U-turn in the broken line area as long as it will not affect the normal traffic flow.
A、Right
B、Wrong
Answer：A
3、The sign on the right warns of a continuous downhill section ahead.
A、Right
B、Wrong
Answer：B
4、The sign in front is an advance announcement of famous places and distances en route.
A、Right
B、Wrong
Answer：A
5、What should the driver do on this kind of curving mountain road?
A、Borrow the opposite lane
B、Slow down and drive on the right
C、Stick to the central line of the road
D、Drive close to the right side
Answer：B
6、When reversing in this condition, in which of the following ways can motor vehicle drivers keep safe?
A、Reverse at a lower speed
B、Voluntarily stop and yield
C、Continuously sound the horn to alert
D、Reverse in a clockwise direction
Answer：B
7、The sign on the right indicates notice by sounding the horn.
A、Right
B、Wrong
Answer：B
8、The sign on the right warns of a narrowed road on both sides ahead.
A、Right
B、Wrong
Answer：B
9、Drivers should drive at a lower speed when traffic police give these hand signals.
A、Right
B、Wrong
Answer：A
10、When putting out a fire disaster that gives out corrosive steam or poisonous gas, the firefighters should wear gas masks and other related protective articles and operate from the windward side.
A、Right
B、Wrong
Answer：A
11、What's the main impact of foggy weather on safe driving?
A、Easy to slide sideways
B、Low visibility
C、Increase the resistance
D、Widen the field of vision
Answer：B
12、When there is a braking failure on a downhill road, what should not be done by the driver?
A、Steering the motor vehicle to the uphill direction
B、Stopping the vehicle by rubbing the vehicle body against the rocks or trees on roadside
C、Driving to the emergency lane and stop the vehicle there
D、Pulling up the stopping brake or change the gear to two positions lower
Answer：D
13、The slanted filled-in yellow marking in the middle of the road warns that there is a stationary obstacle ahead.
A、Right
B、Wrong
Answer：A
14、As shown in the flash, the motor vehicle chooses a correct way to pass through the level crossing.
A、Right
B、Wrong
Answer：A
15、The sign on the right warns of an unguarded railway crossing 150 meters ahead.
A、Right
B、Wrong
Answer：A
16、When parking temporarily on a snowy day, drivers should turn on the headlamp and fog lamp.
A、Right
B、Wrong
Answer：B
17、What does this sign on the fly-over junction indicate?
A、Turn right
B、Drive straight or turn left
C、Drive straight or turn right
D、Take a U-turn under bridge
Answer：C
18、The driver may not yield when the motor vehicle encounters this situation at the intersection.
A、Right
B、Wrong
Answer：B
19、When such circumstances happen suddenly, drivers should reduce speed in a timely fashion or stop to yield.
A、Right
B、Wrong
Answer：A
20、In which of the following ways can motor vehicles avoid a tire burst?
A、Lowering tire pressure
B、Checking tires regularly
C、Removing foreign matters from the tire tread grooves timely
D、Replacing the tires that have cracks or deep cuts
Answer：BCD