Good morning, everyone. Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. Later, in the 1860s, pedals were added to the front wheel, but this design was unstable. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive became popular. This design made cycling much safer and more efficient, leading to a boom in bicycle use, especially among women, who gained greater freedom of movement.
❓ Какое основное преимущество безопасного велосипеда упоминалось в лекции?
A. Она была дешевле в производстве, чем более ранние модели.
B. Это позволило всадникам передвигаться быстрее, чем раньше.
C. Это было безопаснее и эффективнее благодаря цепному приводу и одинаковым колёсам.
D. Его можно было использовать на неровных дорогах без каких-либо затруднений.
✅ 正确答案
It was safer and more efficient due to its chain drive and equal wheels.