Today's lecture is about 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. Later, pedals were added to the front wheel, which made the bicycle faster but also more dangerous. In the 1880s, the safety bicycle was introduced with two equal-sized wheels and a chain drive, which became the model for modern bicycles. Interestingly, the popularity of bicycles also contributed to the women's rights movement, as it gave women greater freedom to travel independently.
❓ ¿Cuál fue un efecto importante de la introducción de la bicicleta de seguridad en la década de 1880?
A. Hizo las bicicletas más lentas pero más seguras.
B. Esto condujo a la invención de la transmisión por cadena.
C. Se convirtió en la base del diseño moderno de bicicletas.