Today we're going to discuss the history of the bicycle. Now, you might think the bicycle was invented in the 19th century, but its earliest form appeared in 1817, when a German inventor created a wooden frame with two wheels and a handlebar, but no pedals. Riders pushed their feet against the ground to move. This was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, leading to the 'velocipede.' However, it wasn't until the 1880s that the chain-driven 'safety bicycle' with two equal-sized wheels became popular, making cycling much safer and more comfortable.
❓ ¿Cuál era la característica principal de la forma más antigua de la bicicleta?
A. A. Tenía un mecanismo de cadena.
B. B. No tenía pedales y los conductores se impulsaban con los pies.
C. C. Tenía dos ruedas de tamaño desigual por seguridad.
D. D. Estaba hecho enteramente de metal.
✅ 正确答案
B. It had no pedals and riders pushed with their feet.