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、The sign in front indicates that vehicles except large passenger vehicles are not allowed to drive on the right lane.
A、Right
B、Wrong
Answer：B
3、Drivers may go straight and pass through when traffic police give these hand signals.
A、Right
B、Wrong
Answer：B
4、The guide arrow on the road surface of this lane indicates that U-turns and left turns are permitted at the intersection ahead.
A、Right
B、Wrong
Answer：A
5、What should drivers keep in mind when driving on amountainous road?
A、Keep a safe distance
B、Avoid occupancy of another lane when making a turn
C、Downshift in advance when ascending an abrupt slope
D、Taking full advantage of engine braking when descending a long slope
Answer：ABCD
6、Motor vehicles should accelerate when driving into an intersection with this traffic signal.
A、Right
B、Wrong
Answer：B
7、Once inflammable gas causes a fire disaster, it should be put out with water in good time.
A、Right
B、Wrong
Answer：B
8、The sign on the right warns of a one-way tunnel ahead.
A、Right
B、Wrong
Answer：B
9、When steering failure happens suddenly, if the road condition permits straight movement, drivers should not apply emergency braking.
A、Right
B、Wrong
Answer：A
10、Two parallel broken double-yellow lines indicate the position of a diversion lane.
A、Right
B、Wrong
Answer：A
11、When encountering such a situation, motor vehicle drivers should take the left lane.
A、Right
B、Wrong
Answer：B
12、The marking on the road surface indicates that the speed limit of this road section is 80 km/hour.
A、Right
B、Wrong
Answer：B
13、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
14、What's the most frequent problem for driving on a muddy road?
A、High resistance force
B、Sideways slide
C、The motor vehicle bumps
D、Steering failure
Answer：B
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、When a motor vehicle passes over an inundated road, what should the driver do for safe driving?
A、Slow down and drive with special care
B、Speed up and pass rapidly
C、Maintain a normal speed and pass through
D、Change to a low gear and speed up to pass
Answer：A
17、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
18、When finding a tire burst on the road, the driver should gently depress the brake pedal, reduce speed and stop the vehicle slowly.
A、Right
B、Wrong
Answer：A
19、The sign indicates no overtaking on the section ahead.
A、Right
B、Wrong
Answer：B
20、Drivers are allowed to cross the broken and solid white line on the road when changing lanes or pulling over.
A、Right
B、Wrong
Answer：A