1、After a traffic accident, what is the most effective measure to prevent secondary accidents?
A、Evacuate all passengers
B、Turn on the hazard lamps
C、Mark the original place of the injured persons
D、Properly place the danger warning sign
Answer：ABD
2、This sign warns to bypass from the right side to avoid the roadblock.
A、Right
B、Wrong
Answer：B
3、The sign on the left indicates vehicles are allowed to drive on the section ahead.
A、Right
B、Wrong
Answer：B
4、When rescuing a wounded person who has been poisoned by toxic gas, the first measure is to send him/her to a place with fresh air so that he/she will not continue to be poisoned.
A、Right
B、Wrong
Answer：A
5、When encountering a road like this, motor vehicle drivers may make good use of neutral gear to coast.
A、Right
B、Wrong
Answer：B
6、Drivers may go straight and pass through when traffic police give these hand signals.
A、Right
B、Wrong
Answer：B
7、During normal driving, the driver should do his/her best to run close to or on the central line so as not to allow oncoming vehicles any opportunity to occupy his own route.
A、Right
B、Wrong
Answer：B
8、When a wounded person is beneath the wheel or cargo, we should help him/her out immediately by pulling the limbs of the wounded.
A、Right
B、Wrong
Answer：B
9、The motor vehicle may promptly overtake the vehicle in front from the left side in this situation.
A、Right
B、Wrong
Answer：B
10、Motor vehicles are permitted to follow the guidance of the arrow in this picture and enter the lane of an expressway.
A、Right
B、Wrong
Answer：B
11、The sign on the right indicates that drivers should choose their lanes in accordance withthe directions indicated by arrows.
A、Right
B、Wrong
Answer：A
12、The sign on the right warns of children on the section ahead.
A、Right
B、Wrong
Answer：B
13、Drivers may cross these lane-dividing lines to change lanes in the same direction.
A、Right
B、Wrong
Answer：B
14、Drivers may temporarily cross these central broken and solid yellow lines when overtaking.
A、Right
B、Wrong
Answer：A
15、The sign on the right warns of an uneven road ahead.
A、Right
B、Wrong
Answer：A
16、The sign on the right indicates the road width ahead is limited to 3 meters.
A、Right
B、Wrong
Answer：A
17、Driving and smoking has no negative effect on safe driving
A、Right
B、Wrong
Answer：B
18、The broken white reflective line on the road warns that drivers should drive at a lower speed on the road section ahead.
A、Right
B、Wrong
Answer：A
19、The sign on the right side warns of an emergency lane 500 meters ahead.
A、Right
B、Wrong
Answer：A
20、When the vehicle behind gives a notice of overtaking at night, the vehicle in front should not yield blindly.
A、Right
B、Wrong
Answer：A