Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, you might be surprised to learn that the first bicycle, invented in the early 19th century, had no pedals. It was propelled by pushing your feet against the ground. This design, called a 'hobby horse,' was popular but inefficient. Then, in the 1860s, the addition of pedals to the front wheel made riding faster, but it was also dangerous because riders often fell forward. It wasn't until the late 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels was introduced, which greatly improved stability and paved the way for modern bicycles.
❓ ¿Cuál era el principal problema del diseño de la bicicleta que tenía pedales en la rueda delantera?
A. Era demasiado lento para ser práctico.
B. Los jinetes caían con frecuencia hacia adelante debido a la inestabilidad.
C. Era demasiado caro de fabricar.
D. Requiere demasiado esfuerzo físico pedalear.
✅ 正确答案
Riders frequently fell forward due to instability.