保山科目四英语书
1、The sign on the right warns for livestock on the road ahead.
A. Right
B. Wrong
Answer：B
2、The guide arrow on the road surface of this lane indicates that only left and right turns are permitted on the lanes ahead.
A. Right
B. Wrong
Answer：A
3、When there is a sudden braking failure on a downhill road, in which ones of the following ways can drivers reduce speed?
A. Driving onto the emergency lane and reduce speed and stop there
B. Rubbing the vehicle body against the rocks or trees on roadside
C. Pulling up the handbrake first
D. Immediately changing to a low gear
Answer：ABD
4、The sign on the right indicates that no restriction for temporary parking.
A. Right
B. Wrong
Answer：B
5、A correct measure to avoid tire burst of motor vehicles is to lower the tire pressure.
A. Right
B. Wrong
Answer：B
6、The sign in front indicates a one-way lane after turning left.
A. Right
B. Wrong
Answer：A
7、Motor vehicles should stop and wait when encountering two red lights flashing alternately at level crossings.
A. Right
B. Wrong
Answer：A
8、The sign on the right side indicates no entry for all vehicles.
A. Right
B. Wrong
Answer：A
9、When a motor vehicle encounters thick fog on an expressway and the visibility is poor, the driver should immediately brake and stop.
A. Right
B. Wrong
Answer：B
10、When a wounded person suffering burns is thirsty he may drink a small quantity of lightly salty water.
A. Right
B. Wrong
Answer：A
11、When rescuing a wounded person who has been poisoned by toxic gas, which of the following measures should be taken first?
A. Prevent heat loss
B. Bring him to a place with fresh air
C. Give him artificial respiration
D. Depress the heart over the chest
Answer：B
12、When the tire pressure is too low, what will happen if the tire changes its shape in waves and increases in temperature due to fast movement?
A. Unstable tire pressure
B. Even lower tire pressure
C. Driving resistance increases
D. Tire burst
Answer：D
13、If a motor vehicle misses an exit on the expressway, the driver may reverse along the road shoulder.
A. Right
B. Wrong
Answer：B
14、When driving on a muddy road, the driver should hold the steering wheel firmly and speed up to pass through.
A. Right
B. Wrong
Answer：B
15、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
16、The sign on the right warns of a wildlife protection area ahead.
A. Right
B. Wrong
Answer：B
17、When there is a sudden braking failure on the road, what should be done by the driver?
A. Firmly holding the steering wheel and controlling the direction
B. Immediately changing to a low gear to reduce speed
C. Using the stopping brake to reduce speed
D. Turning on the hazard lamps
Answer：ABCD
18、The sign in front is an advance announcement of the directions led by this intersection.
A. Right
B. Wrong
Answer：A
19、Under such circumstances, what should motor vehicle drivers do?
A. Continuously sound the horn
B. Pass quickly
C. Pass at a lower speed
D. Bypass from either side
Answer：C
20、What should be done by the driver who intends to overtake but finds that the vehicle in front is also overtaking?
A. Following the vehicle in front closely and finding a chance to overtake it
B. Accelerating to overtake forcefully
C. Continuously sounding the horn to urge the vehicle in front to yield
D. Refraining from overtaking and letting the vehicle in front overtake first
Answer：D