1、Mr. He drove his large bus with 53 passengers (permitted carrying capacity 47) to 454 km mark by 100m along the Yining-hefei Expressway in Nanjing jurisdiction, where he was tailgated by a heavy-type semitrailer tractor. The bus left the road, breaking through the guardrail and catching fire. 17 people were killed and 27 injured. Which of the following law-breaking acts did Mr. He commit?
A、Speeding
B、Exceeding the carrying capacity of the motor bus
C、Driving a motor vehicle overdue for annual inspection
D、Improper operation
Answer：B
2、A correct measure to avoid tire burst of motor vehicles is to lower the tire pressure.
A、Right
B、Wrong
Answer：B
3、The sign on the right side warns of crosswind on the mountain pass ahead.
A、Right
B、Wrong
Answer：A
4、Drivers may turn left when traffic police give these hand signals.
A、Right
B、Wrong
Answer：B
5、The sign on the right warns of a sharp winding road ahead.
A、Right
B、Wrong
Answer：B
6、The main impact of muddy roads on safe driving is that the wheels may easily spin and skid
A、Right
B、Wrong
Answer：A
7、When driving on an expressway, drivers should not frequently change lanes.
A、Right
B、Wrong
Answer：A
8、For evading an emergency on an expressway, which of the following principles should drivers stick to?
A、Evading vehicles first and objects later
B、Evading people first and objects later
C、Evading vehicles first and people later
D、Evading objects first and people later
Answer：B
9、This sign warns to bypass from either side to avoid roadblock.
A、Right
B、Wrong
Answer：A
10、When a bus encounters an unexpected situation or an accident, the driver should do his best to minimize the loss and should never cause a secondary accident or even greater loss for the sake of avoiding danger.
A、Right
B、Wrong
Answer：A
11、The broken yellow line in the center of the road indicates that overtaking by crossing the line is permitted in safe situations.
A、Right
B、Wrong
Answer：A
12、When a motor vehicle accidentally hits the guardrail of a highway, an effective protective measure is to turn dramatically in the opposite direction.
A、Right
B、Wrong
Answer：B
13、The sign in the red circle indicates that vehicles except non-motor vehicles are not allowed to drive in this lane.
A、Right
B、Wrong
Answer：A
14、Which of the following acts are prohibited when passing through a tunnel?
A、Overtaking
B、Stopping
C、Making a U-turn
D、Reversing
Answer：ABCD
15、What should be done when drivers evade an emergency on the highway?
A、Take braking measures to reduce speed
B、Yield by turning to the left side
C、Evade by swiftly turning the steering wheel
D、Yield by turning to the right side
Answer：A
16、Mr. Qi drove a large bus with 28 passengers(capacit 55 people). When arriving at an intersection without any traffic signals from south to north at a speed of 50 kilometers per hour, the bus had a side collision with Mr. Li's heavy semi-trailer tractor (capacity 40 tons and carrying 55.2 tons) running from east to west. As a result of this accident, 12 people were killed and 17 injured. What are the main illegal acts in this case?
A、The bus carried more passengers than capacity
B、The bus exceeded the speed limit
C、The tractor carried more cargo than capacity
D、The driver of the tractor was inexperienced
Answer：BC
17、The cross-hatched marking indicates an area where vehicle drivers are allowed to stop and wait.
A、Right
B、Wrong
Answer：B
18、Mr. Zou drove a large sleeper coach (capacity 35 people and carrying 47 passengers). At the spot of 938 kilometers of the Jinggang'ao Expressway, large amounts of dangerous chemicals in the coach blew up, killing 41 people and injuring 6. What are the main illegal acts in this case?
A、Carrying more passengers than permitted
B、Passengers carried flammable and explosive substances
C、Speeding
D、Illegal parking
Answer：AB
19、The guide arrow on the road surface of this lane indicates that only right turns are permitted at the intersection ahead.
A、Right
B、Wrong
Answer：B
20、When driving on a snowy day, drivers should follow the tracks on the road before them.
A、Right
B、Wrong
Answer：A