Good morning, class. Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but in fact, a primitive version appeared in 1817, invented by a German baron named Karl von Drais. His machine, called the 'running machine,' had no pedals; riders pushed their feet against the ground. It wasn't until the 1860s that pedals were added in France. However, the first practical and widely popular design came in the 1880s with the 'safety bicycle,' which featured equal-sized wheels and a chain drive. This design made cycling much safer and more comfortable, leading to a boom in popularity.
❓ Según la conferencia, ¿cuándo se hizo la bicicleta popular por primera vez?
A. En 1817, cuando se inventó la máquina de correr.
B. En la década de 1860, cuando se añadieron los pedales.
C. En la década de 1880, con la introducción de la bicicleta de seguridad.
D. En el siglo XIX, pero no se menciona una fecha específica.
✅ 正确答案
In the 1880s, with the introduction of the safety bicycle.