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、The right-front sign indicates a time-regulated pedestrian area.
A、Right
B、Wrong
Answer：A
3、In rain, the most effective way to avoid the danger arising from "water slide" is to drive at high speed
A、Right
B、Wrong
Answer：B
4、This sign warns to bypass from the left side to avoid the roadblock.
A、Right
B、Wrong
Answer：B
5、The main impact of muddy roads on safe driving is that the wheels may easily spin and skid
A、Right
B、Wrong
Answer：A
6、The road marking on the right lane indicates that drivers may temporarily borrow the special lane for buses.
A、Right
B、Wrong
Answer：B
7、The sign on the right warns of no passing due to collapse on the road ahead.
A、Right
B、Wrong
Answer：B
8、The sign on the right warns of low-lying road ahead.
A、Right
B、Wrong
Answer：A
9、When there is a sudden braking failure on a downhill road, what should be done by the driver?
A、Driving to an emergency lane and reducing speed to stop
B、Dropping the gear by two positions
C、Changing to the reverse gear to force the vehicle to stop
D、Reducing speed by pulling up the handbrake
Answer：A
10、The sign on the left indicates the destinations of two highway directions
A、Right
B、Wrong
Answer：A
11、When finding a tire suddenly burst on the road, the driver should firmly hold the steering wheel with both hands to ensure the vehicle goes straight.
A、Right
B、Wrong
Answer：A
12、When parking temporarily on a snowy day, drivers should turn on the headlamp and fog lamp.
A、Right
B、Wrong
Answer：B
13、What should the driver do when the motor vehicle encounters this situation in front of a school?
A、Bypass before the queue
B、Slow down and pass slowl
C、Stop promptly and yield
D、Go through in the spaces between the queues
Answer：C
14、When encountering this situation in a residential area the driver should sound the horn continuously.
A、Right
B、Wrong
Answer：B
15、The leading cause of this accident is that the driver failed to make sure that it was safe to reverse before doing so.
A、Right
B、Wrong
Answer：A
16、When a wounded person suffering burns is thirsty, he should only drink plain boiled water.
A、Right
B、Wrong
Answer：B
17、What should the driver do in this condition?
A、Go through normally on the right side
B、Sound the horn and speed up to go through the tunnel
C、Stop and yield to the oncoming vehicle
D、Turn on the headlamp to warn the oncoming vehicle to yield
Answer：C
18、Motor vehicle drivers may make a U-turn in this area as long as it will not affect the passing of pedestrians.
A、Right
B、Wrong
Answer：B
19、The drivers, loaders and supercargoes responsible for dangerous chemicals transportation should all full understand the chemical characteristics, potential risks, features of the packaging containers and emergency measures for any unexpected accidents.
A、Right
B、Wrong
Answer：A
20、One day, Mr. Yang drove a large bus with 57 passengers(bus capacity 55 people)from 7 pm to 1 am the following morning. At the spot of 3008 kilometers mark by 110 meters on the No. 050 National Road in Jin Chengjiang District, the bus had a malignant traffic accident caused by front left tire burst, killing12 people and injuring 22. What's the main illegal act committed by Mr Yang?
A、Fatigued driving
B、Carrying more passengers than permitted
C、Speeding
D、Misoperation
Answer：AB