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124. What influence does smoking have upon driving?
A. Harmful for safe driving
B. Increase concentration
C. Help relaxation
D. No effect on driving
Answer：A
Previous question: 123. Which of the following is a bad habit when changing lanes?
Next question: 125. When driving on a long downhill road, which is the best way to control the speed?
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
- What is the meaning of this sign?
- What is the meaning of this sign?
- When driving in thick or extremely thick fog, what should the driver do due to the low visibility in such weather?
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- Which of the following measures is incorrect when a motor vehicle stops?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?
- Dangerous chemicals possess the characteristics of explosion, inflammation, poison, erosion and radiation.
- Which lamp should be turned on when motor vehicles pass through a road section at night where the street light condition is good?
- In emergencies, people¡¯s life safety should always be put in the first place.
- What is the meaning of this sign?
- What is the meaning of this sign?
- What is the meaning of this sign?
- What influence does smoking have upon driving?
- When there is no bondage for rescuing a wounded person, towels, handkerchiefs, bed sheets and stockings can be used for dressing.
- When approaching a vehicle on a narrow slope, which one of the following ways is correct?
- What should the driver do to follow other motor vehicles on a mountain road?