In today's lecture, we'll discuss the history of the bicycle. The first two-wheeled vehicle, called the draisine, appeared in 1817 in Germany. It had no pedals; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel in France, creating the velocipede. However, it was nicknamed the 'boneshaker' due to its rigid frame and rough ride. Later, in the 1880s, the safety bicycle was introduced in England with a chain drive and two equal-sized wheels, making it much more stable. This design became the basis for modern bicycles.
❓ ¿Cuál fue la principal ventaja de la bicicleta de seguridad introducida en la década de 1880?
A. Tenía un asiento más cómodo.
B. Era más ligero y más fácil de llevar.
C. Era más estable debido a sus ruedas de igual tamaño y transmisión por cadena.
D. Podía viajar más rápido que los modelos anteriores.
✅ 正确答案
It was more stable because of its equal-sized wheels and chain drive.