Today we're going to discuss the history of the bicycle. The first practical bicycle, called the 'draisine', was invented in Germany in 1817 by Karl von Drais. It had no pedals; riders pushed their feet against the ground to move. In the 1860s, pedals were added to the front wheel in France, leading to the 'velocipede'. However, this design was uncomfortable due to its rigid frame. Later, in the 1880s, the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling safer and more accessible to the general public.
❓ Según la conferencia, ¿qué característica hizo que la bicicleta de seguridad fuera más popular que los diseños anteriores?
A. A. Tenía una rueda delantera con pedales.
B. B. Utilizaba una transmisión por cadena y ruedas de igual tamaño.
C. C. Fue inventado en Alemania.
D. D. No tenía pedales y los conductores se impulsaban con los pies.