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55. What is the meaning of this sign?
A. Road narrows on both sides
B. Road narrows on the right side
C. Road narrows on the left side
D. Bridge narrows
Answer：C
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2026年摩托车科目四英文版题库共345题，你可以免费查看前50题，完整版题库请添加微信购买：
The English version of the 2026 motorcycle subject 4 question bank has a total of 345 questions. You can view the top 50 questions for free. Please add WeChat to purchase the complete version of the question bank.
科目四试题
- When the tire pressure is too low, what can happen when driving at a high speed?
- Which lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
- 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.
- When a motor vehicle stops in snow, which lamp should be turned on?
- Which lamp should be used when motor vehicles pass hrough an intersection at night where there is no traffic light signal?
- What is the meaning of this sign?
- When a gas tanker is leaking heavily, which of the following measures is wrong?
- What is the meaning of this sign?
- When rescuers enter the scene to rescue the wounded after harmful gas leakage caused by traffic accidents, they must wear air respirators or cover their mouth and nose with wet towels.
- When encountering a vehicle in front ascending on a mountainous road covered with ice and snow, what should the motor vehicle driver do?
- What is the meaning of this sign?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
- What is the most frequent problem for driving on a muddy road?
- What should the driver do to follow other motor vehicles on a mountain road?
- What is the meaning of this sign?
- When a motor vehicle passes over an overflowing bridge, what should the driver do after stopping and observing closely?