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 tires and rough ride. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive was introduced, making cycling much safer and more popular, especially among women.
❓ ¿Cuál fue una mejora importante de la bicicleta de seguridad introducida en la década de 1880?
A. A. Tenía pedales unidos a la rueda delantera.
B. B. Tenía dos ruedas del mismo tamaño y una transmisión por cadena.
C. C. Era empujada por los pies del jinete.
D. D. Tenía neumáticos sólidos para un viaje más suave.
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.