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. It was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede.' However, this design was very uncomfortable due to its solid rubber tires and rough ride. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive became popular, making cycling much safer and more accessible to the general public.
❓ Каким было основное улучшение безопасного велосипеда по сравнению с более ранними конструкциями?
A. A. К педалям, прикреплённым к переднему колесу.
B. B. У него было два колеса одинакового размера и цепная передача.
C. C. Он был легче и дешевле в производстве
D. D. Он был оснащён цельными резиновыми шинами для более плавной езды.
✅ 正确答案
B. It had two equal-sized wheels and a chain drive