Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called the 'velocipede', appeared in the early 19th century. It had no pedals, so riders pushed their feet along the ground. In the 1870s, the 'penny-farthing' became popular, with a huge front wheel and a small rear wheel. However, it was dangerous because riders sat high above the ground. Then in 1885, the 'safety bicycle' was invented. It had two equal-sized wheels and a chain drive, making it much safer and more practical. By the early 20th century, bicycles had become a common mode of transport for ordinary people.
❓ ¿Cuál era el principal problema de la bicicleta penny-farthing?
A. A. Era demasiado pesada para subir cuestas.
B. B. No tenía pedales, lo que lo hacía lento.
C. C. Los jinetes se sentaban muy por encima del suelo, por lo que era peligroso.
D. D. Era demasiado caro para la mayoría de la gente.
✅ 正确答案
C. Riders sat high above the ground, so it was dangerous.