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、This sign warns to bypass from either side to avoid roadblock.
A、Right
B、Wrong
Answer：A
3、The sign in front indicates the allocation of roads ahead.
A、Right
B、Wrong
Answer：B
4、Under such circumstances, motor vehicles are allowed to cross the central solid line to overtake.
A、Right
B、Wrong
Answer：B
5、When driving on the expressway in a heavy rain, what should the driver do to avoid "water sliding" phenomenon?
A、Install slide-proof devices
B、Speed up
C、Slow down
D、Continue to depress the brake
Answer：C
6、When a motor vehicle temporarily stops at night, which lamp should be turned on?
A、Front and rear fog lamp, clearance lamp and rear position lamp
B、Head lamp, clearance lamp and rear position lamp
C、Hazard lamp, clearance lamp and rear position lamp
D、Reverse lamp, clearance lamp and rear position lamp
Answer：C
7、When parking for a long time on a downward slope due to breakdown on the road, drivers should use this method to stop up wheels.
A、Right
B、Wrong
Answer：A
8、When a motor vehicle catches fire, the driver should swiftly turn off the engine and open the hood to extinguish the fire.
A、Right
B、Wrong
Answer：B
9、The sign indicates no overtaking on the section ahead.
A、Right
B、Wrong
Answer：B
10、When the rear wheels of a motor vehicle skid sideways on a muddy road, the driver should turn the steering wheel in the opposite direction of the side skid.
A、Right
B、Wrong
Answer：B
11、What action is important on this kind of mountain road?
A、Take care of the dangerous hillside road on the left
B、Drive on the left
C、Drive along the central line of the road
D、Drive on the right side and pass slowly
Answer：D
12、When a wounded person suffering bone fracture in the thigh, shank or spine, moving the wounded person is usually prohibited.
A、Right
B、Wrong
Answer：A
13、When a motor vehicle encounters an accident on an expressway, the driver and all passengers should not get off the vehicle and walk around at will.
A、Right
B、Wrong
Answer：B
14、The sign in front indicates a one-way lane after turning right.
A、Right
B、Wrong
Answer：A
15、When encountering such pedestrians while driving, a longer safety distance should be kept by drivers.
A、Right
B、Wrong
Answer：A
16、When a wounded person is unable to get off the vehicle by himself/herself, he/she should be removed from the vehicle so as to avoid a secondary injury.
A、Right
B、Wrong
Answer：A
17、The sign on the right warns of a non-motor vehicle lane.
A、Right
B、Wrong
Answer：B
18、Drivers may go straight and pass through when traffic police give these hand signals.
A、Right
B、Wrong
Answer：B
19、Which one of the following is the safest way to pass the oncoming vehicle on this road?
A、Driving along the central line
B、Driving with headlamp on
C、Yielding by the right side of the road
D、Yielding by the left side of the oncoming vehicle
Answer：C
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