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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
- When driving in rain and encountering pedestrians with umbrellas or wearing raincoats, what should be done by motor vehicle drivers in order to yield?
- When rescuing a wounded person suffering from bone fracture, which of the following should be kept in mind?
- What is the meaning of this sign?
- How should lamps be used when a motor vehicle meets an oncoming bicycle on a narrow road or a narrow bridge at night?
- What is the meaning of this sign?
- Which one of the following measures is correct when a motor vehicle intends to overtake but the vehicle infront refuses to yield?
- When a motor vehicle temporarily stops at night, which lamp should be turned on?
- When removing a wounded person suffering spinal fracture, the rescuer should never help the wounded person to walk. He may be carried away with a soft stretcher.
- What is the meaning of this sign?
- What should the driver do when he/she encounters an oncoming ambulance in the same lane?
- What is the meaning of this sign?
- 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 main impact of foggy weather on safe driving?
- When encountering an obstacle on one side of the road, what should vehicles do as they approach each other?