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 uncomfortable 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.
❓ ¿Cuál fue una característica clave de la bicicleta de seguridad que la hizo popular?
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. Fue la primera bicicleta jamás inventada.
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.