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, but this design was unstable and difficult to ride. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling much safer and more accessible to the general public.
❓ Что сделало безопасный велосипед более популярным, чем более ранние конструкции?
A. A. У него было большее переднее колесо.
B. B. Он был легче и дешевле в производстве.
C. C. Он использовал цепную передачу и колёса одинакового размера для безопасности.
D. D. У него были педали, прикреплённые к переднему колесу.
✅ 正确答案
C. It used a chain drive and equal-sized wheels for safety.