In today's lecture, we're discussing the history of the bicycle. The first practical bicycle, known as the 'velocipede', was invented in the 1860s in France. It had wooden wheels and pedals attached directly to the front wheel, which made it difficult to ride. Later, in the 1870s, the 'penny-farthing' became popular, featuring a large front wheel and a small rear wheel. However, it was dangerous because riders sat high above the ground. The modern safety bicycle, with two equal-sized wheels and a chain drive, emerged in the 1880s, making cycling much safer and more accessible to the general public.
❓ Según la conferencia, ¿cuál era el principal problema con la bicicleta penny-farthing?
A. A. Tenía ruedas de madera que eran incómodas.
B. B. Era difícil pedalear debido a la conexión directa.
C. C. Los jinetes se sentaban muy por encima del suelo, lo que lo hacía peligroso.
D. D. Era demasiado caro para que la mayoría de la gente lo comprara.
✅ 正确答案
C. Riders sat high above the ground, making it dangerous.