Good morning, everyone. Today we're going to talk about the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but in fact, the first two-wheeled vehicle appeared in 1817, invented by a German baron named Karl von Drais. However, this early model, called the 'draisine', had no pedals; riders pushed their feet against the ground to move. It wasn't until 1860s that pedals were added to the front wheel in France. Interestingly, the modern chain-driven bicycle with two equal-sized wheels was developed in England in the 1880s, which made riding much safer and more efficient. So, to sum up, the key development that made bicycles popular for everyday use was the introduction of the chain drive.
❓ ¿Cuál fue la razón principal por la que las bicicletas se volvieron populares para el uso diario?
A. La invención de la draisina en Alemania
B. La adición de pedales a la rueda delantera en Francia
C. El desarrollo de la bicicleta de cadena en Inglaterra
D. El uso de dos ruedas de igual tamaño por primera vez
✅ 正确答案
The development of the chain-driven bicycle in England