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 propelled by pushing feet against the ground. Later, the penny-farthing, with its large front wheel, became popular among wealthy young men. However, it was dangerous due to its height. The safety bicycle, introduced in the 1880s, featured two equal-sized wheels and a chain drive, making it much more stable. This design led to a boom in cycling, especially among women, as it allowed for more practical clothing. By the early 20th century, bicycles became a common mode of transport for working-class people, offering affordable personal mobility.
❓ Theo bài giảng, lợi thế lớn của xe đạp an toàn so với các mẫu xe trước đó là gì?
A. A. Nó nhẹ hơn và dễ mang theo hơn.
B. B. Nó có bộ truyền động xích giúp nó nhanh hơn.
C. C. Nó ổn định hơn nhờ có các bánh xe có kích thước bằng nhau.